231087635065 has 24 divisors (see below), whose sum is σ = 322797793032. Its totient is φ = 158352848640.

The previous prime is 231087634991. The next prime is 231087635101. The reversal of 231087635065 is 560536780132.

It can be written as a sum of positive squares in 4 ways, for example, as 37956390976 + 193131244089 = 194824^2 + 439467^2 .

It is not a de Polignac number, because 231087635065 - 2⁷ = 231087634937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44407 + ... + 681283.

It is an arithmetic number, because the mean of its divisors is an integer number (13449908043).

Almost surely, 2^231087635065 is an apocalyptic number.

It is an amenable number.

231087635065 is a deficient number, since it is larger than the sum of its proper divisors (91710157967).

231087635065 is a wasteful number, since it uses less digits than its factorization.

231087635065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638377 (or 638370 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 231087635065 in words is "two hundred thirty-one billion, eighty-seven million, six hundred thirty-five thousand, sixty-five".