231139260895 has 4 divisors (see below), whose sum is σ = 277367113080. Its totient is φ = 184911408712.

The previous prime is 231139260881. The next prime is 231139260901. The reversal of 231139260895 is 598062931132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231139260895 - 2²⁵ = 231105706463 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23113926085 + ... + 23113926094.

It is an arithmetic number, because the mean of its divisors is an integer number (69341778270).

Almost surely, 2^231139260895 is an apocalyptic number.

231139260895 is a deficient number, since it is larger than the sum of its proper divisors (46227852185).

231139260895 is an equidigital number, since it uses as much as digits as its factorization.

231139260895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46227852184.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 231139260895 in words is "two hundred thirty-one billion, one hundred thirty-nine million, two hundred sixty thousand, eight hundred ninety-five".