231510465131 has 16 divisors (see below), whose sum is σ = 263560566528. Its totient is φ = 201295908000.

The previous prime is 231510465103. The next prime is 231510465133. The reversal of 231510465131 is 131564015132.

It is a de Polignac number, because none of the positive numbers 2^k-231510465131 is a prime.

It is a super-2 number, since 2×231510465131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231510465133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3484040 + ... + 3549866.

It is an arithmetic number, because the mean of its divisors is an integer number (16472535408).

Almost surely, 2^231510465131 is an apocalyptic number.

231510465131 is a deficient number, since it is larger than the sum of its proper divisors (32050101397).

231510465131 is a wasteful number, since it uses less digits than its factorization.

231510465131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79762.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 231510465131 in words is "two hundred thirty-one billion, five hundred ten million, four hundred sixty-five thousand, one hundred thirty-one".