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1312111332230 = 251921133216511
BaseRepresentation
bin10011000101111111111…
…011100000101110000110
311122102210021221212200112
4103011333323200232012
5132444201000112410
62442435311313022
7163540225206026
oct23057773405606
94572707855615
101312111332230
11466510705376
1219236751b772
139696833c80a
1447713ca7a86
15241e7338105
hex1317fee0b86

1312111332230 has 48 divisors (see below), whose sum is σ = 2514707679744. Its totient is φ = 492820796160.

The previous prime is 1312111332223. The next prime is 1312111332277. The reversal of 1312111332230 is 322331112131.

It is a super-2 number, since 2×13121113322302 (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312111332196 and 1312111332205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1200326 + ... + 2016185.

It is an arithmetic number, because the mean of its divisors is an integer number (52389743328).

Almost surely, 21312111332230 is an apocalyptic number.

1312111332230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312111332230 is a deficient number, since it is larger than the sum of its proper divisors (1202596347514).

1312111332230 is a wasteful number, since it uses less digits than its factorization.

1312111332230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216669 (or 3216650 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1312111332230 its reverse (322331112131), we get a palindrome (1634442444361).

The spelling of 1312111332230 in words is "one trillion, three hundred twelve billion, one hundred eleven million, three hundred thirty-two thousand, two hundred thirty".

Divisors: 1 2 5 10 19 38 95 113 190 226 361 565 722 1130 1805 2147 3610 4294 10735 21470 40793 81586 203965 407930 3216511 6433022 16082555 32165110 61113709 122227418 305568545 363465743 611137090 726931486 1161160471 1817328715 2322320942 3634657430 5805802355 6905849117 11611604710 13811698234 34529245585 69058491170 131211133223 262422266446 656055666115 1312111332230