231658364425 has 6 divisors (see below), whose sum is σ = 287256371918. Its totient is φ = 185326691520.

The previous prime is 231658364363. The next prime is 231658364513. The reversal of 231658364425 is 524463856132.

It can be written as a sum of positive squares in 3 ways, for example, as 38223769081 + 193434595344 = 195509^2 + 439812^2 .

It is not a de Polignac number, because 231658364425 - 2⁹ = 231658363913 is a prime.

It is a super-2 number, since 2×231658364425² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4633167264 + ... + 4633167313.

Almost surely, 2^231658364425 is an apocalyptic number.

231658364425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231658364425 is a deficient number, since it is larger than the sum of its proper divisors (55598007493).

231658364425 is an equidigital number, since it uses as much as digits as its factorization.

231658364425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266334587 (or 9266334582 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 49.

The spelling of 231658364425 in words is "two hundred thirty-one billion, six hundred fifty-eight million, three hundred sixty-four thousand, four hundred twenty-five".