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31157360466 = 2343237120103
BaseRepresentation
bin11101000001000111…
…111001011101010010
32222102102001220110120
4131001013321131102
51002302241013331
622151414211110
72152052123421
oct350107713522
988372056416
1031157360466
1112239577091
126056653a96
132c270aa48b
1417180392b8
15c25540796
hex7411f9752

31157360466 has 16 divisors (see below), whose sum is σ = 62316681024. Its totient is φ = 10385460144.

The previous prime is 31157360459. The next prime is 31157360471. The reversal of 31157360466 is 66406375113.

It is a super-2 number, since 2×311573604662 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199371 + ... + 319473.

It is an arithmetic number, because the mean of its divisors is an integer number (3894792564).

Almost surely, 231157360466 is an apocalyptic number.

31157360466 is an abundant number, since it is smaller than the sum of its proper divisors (31159320558).

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

31157360466 is a wasteful number, since it uses less digits than its factorization.

31157360466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163345.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 31157360466 in words is "thirty-one billion, one hundred fifty-seven million, three hundred sixty thousand, four hundred sixty-six".

Divisors: 1 2 3 6 43237 86474 120103 129711 240206 259422 360309 720618 5192893411 10385786822 15578680233 31157360466