231312195 has 12 divisors (see below), whose sum is σ = 400941216. Its totient is φ = 123366480.

The previous prime is 231312187. The next prime is 231312203. The reversal of 231312195 is 591213132.

231312195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231312187) and next prime (231312203).

It is not a de Polignac number, because 231312195 - 2³ = 231312187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2570091 + ... + 2570180.

It is an arithmetic number, because the mean of its divisors is an integer number (33411768).

Almost surely, 2^231312195 is an apocalyptic number.

231312195 is a deficient number, since it is larger than the sum of its proper divisors (169629021).

231312195 is a wasteful number, since it uses less digits than its factorization.

231312195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140282 (or 5140279 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 231312195 is about 15208.9511472685. The cubic root of 231312195 is about 613.8555356561.

The spelling of 231312195 in words is "two hundred thirty-one million, three hundred twelve thousand, one hundred ninety-five".