231855502655 has 24 divisors (see below), whose sum is σ = 320094091296. Its totient is φ = 157933195200.

The previous prime is 231855502631. The next prime is 231855502663. The reversal of 231855502655 is 556205558132.

It is not a de Polignac number, because 231855502655 - 2²⁰ = 231854454079 is a prime.

It is a super-2 number, since 2×231855502655² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 652769 + ... + 943301.

It is an arithmetic number, because the mean of its divisors is an integer number (13337253804).

Almost surely, 2^231855502655 is an apocalyptic number.

231855502655 is a deficient number, since it is larger than the sum of its proper divisors (88238588641).

231855502655 is an equidigital number, since it uses as much as digits as its factorization.

231855502655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290847 (or 290696 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 47.

The spelling of 231855502655 in words is "two hundred thirty-one billion, eight hundred fifty-five million, five hundred two thousand, six hundred fifty-five".