231277045631 has 32 divisors (see below), whose sum is σ = 247309867200. Its totient is φ = 215864248320.

The previous prime is 231277045627. The next prime is 231277045633. The reversal of 231277045631 is 136540772132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231277045631 - 2² = 231277045627 is a prime.

It is a super-2 number, since 2×231277045631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231277045633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158516780 + ... + 158518238.

It is an arithmetic number, because the mean of its divisors is an integer number (7728433350).

Almost surely, 2^231277045631 is an apocalyptic number.

231277045631 is a deficient number, since it is larger than the sum of its proper divisors (16032821569).

231277045631 is a wasteful number, since it uses less digits than its factorization.

231277045631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 231277045631 in words is "two hundred thirty-one billion, two hundred seventy-seven million, forty-five thousand, six hundred thirty-one".