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31145044255050 = 23521173258572389
BaseRepresentation
bin1110001010011100001010…
…10011001010000101001010
311002021102210200110202210110
413011032011103022011022
513040240022312130200
6150123500311255150
76363104142101415
oct705160523120512
9132242720422713
1031145044255050
119a185a2594610
1235b015037a4b6
13144bc71351b7b
147995dcd22b7c
1539024a00ab50
hex1c53854ca14a

31145044255050 has 96 divisors (see below), whose sum is σ = 85415769023040. Its totient is φ = 7446884774400.

The previous prime is 31145044255007. The next prime is 31145044255069. The reversal of 31145044255050 is 5055244054113.

It is a super-3 number, since 3×311450442550503 (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129165745 + ... + 129406644.

It is an arithmetic number, because the mean of its divisors is an integer number (889747593990).

Almost surely, 231145044255050 is an apocalyptic number.

31145044255050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31145044255050 is an abundant number, since it is smaller than the sum of its proper divisors (54270724767990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31145044255050 is a wasteful number, since it uses less digits than its factorization.

31145044255050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258572488 (or 258572483 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 31145044255050 in words is "thirty-one trillion, one hundred forty-five billion, forty-four million, two hundred fifty-five thousand, fifty".

Divisors: 1 2 3 5 6 10 11 15 22 25 30 33 50 55 66 73 75 110 146 150 165 219 275 330 365 438 550 730 803 825 1095 1606 1650 1825 2190 2409 3650 4015 4818 5475 8030 10950 12045 20075 24090 40150 60225 120450 258572389 517144778 775717167 1292861945 1551434334 2585723890 2844296279 3878585835 5688592558 6464309725 7757171670 8532888837 12928619450 14221481395 17065777674 18875784397 19392929175 28442962790 37751568794 38785858350 42664444185 56627353191 71107406975 85328888370 94378921985 113254706382 142214813950 188757843970 207633628367 213322220925 283136765955 415267256734 426644441850 471894609925 566273531910 622900885101 943789219850 1038168141835 1245801770202 1415683829775 2076336283670 2831367659550 3114504425505 5190840709175 6229008851010 10381681418350 15572522127525 31145044255050