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311421210545130 = 23577120886734443
BaseRepresentation
bin100011011001111000110011…
…0101000010100101111101010
31111211122120120121112222010220
41012303301212220110233222
5311304311114344421010
63022200532403350510
7122411303624346420
oct10663614650245752
91454576517488126
10311421210545130
1190256aa2689274
122ab17625382436
131049cb8158900a
1456c8c1d12d110
152600ba8a9c970
hex11b3c66a14bea

311421210545130 has 64 divisors (see below), whose sum is σ = 866214650861568. Its totient is φ = 70179427725120.

The previous prime is 311421210545117. The next prime is 311421210545161. The reversal of 311421210545130 is 31545012124113.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 311421210545091 and 311421210545100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10443352312 + ... + 10443382131.

It is an arithmetic number, because the mean of its divisors is an integer number (13534603919712).

Almost surely, 2311421210545130 is an apocalyptic number.

311421210545130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311421210545130 is an abundant number, since it is smaller than the sum of its proper divisors (554793440316438).

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

311421210545130 is a wasteful number, since it uses less digits than its factorization.

311421210545130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20886734531.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 311421210545130 its reverse (31545012124113), we get a palindrome (342966222669243).

The spelling of 311421210545130 in words is "three hundred eleven trillion, four hundred twenty-one billion, two hundred ten million, five hundred forty-five thousand, one hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 71 105 142 210 213 355 426 497 710 994 1065 1491 2130 2485 2982 4970 7455 14910 20886734443 41773468886 62660203329 104433672215 125320406658 146207141101 208867344430 292414282202 313301016645 438621423303 626602033290 731035705505 877242846606 1462071411010 1482958145453 2193107116515 2965916290906 4386214233030 4448874436359 7414790727265 8897748872718 10380707018171 14829581454530 20761414036342 22244372181795 31142121054513 44488744363590 51903535090855 62284242109026 103807070181710 155710605272565 311421210545130