50997231131 has 54 divisors (see below), whose sum is σ = 66123299844. Its totient is φ = 38892436800.

The previous prime is 50997231113. The next prime is 50997231191. The reversal of 50997231131 is 13113279905.

It is not a de Polignac number, because 50997231131 - 2²² = 50993036827 is a prime.

It is a super-2 number, since 2×50997231131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50997231191) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 372242495 + ... + 372242631.

Almost surely, 2^50997231131 is an apocalyptic number.

50997231131 is a deficient number, since it is larger than the sum of its proper divisors (15126068713).

50997231131 is an equidigital number, since it uses as much as digits as its factorization.

50997231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 41.

The spelling of 50997231131 in words is "fifty billion, nine hundred ninety-seven million, two hundred thirty-one thousand, one hundred thirty-one".