231397582959 has 48 divisors (see below), whose sum is σ = 356222329632. Its totient is φ = 144240113664.

The previous prime is 231397582873. The next prime is 231397582981. The reversal of 231397582959 is 959285793132.

231397582959 is a `hidden beast` number, since 231 + 397 + 5 + 8 + 2 + 9 + 5 + 9 = 666.

It is not a de Polignac number, because 231397582959 - 2⁹ = 231397582447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231397582896 and 231397582905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231397582259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46397664 + ... + 46402650.

It is an arithmetic number, because the mean of its divisors is an integer number (7421298534).

Almost surely, 2^231397582959 is an apocalyptic number.

231397582959 is a deficient number, since it is larger than the sum of its proper divisors (124824746673).

231397582959 is a wasteful number, since it uses less digits than its factorization.

231397582959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6936 (or 6933 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

The spelling of 231397582959 in words is "two hundred thirty-one billion, three hundred ninety-seven million, five hundred eighty-two thousand, nine hundred fifty-nine".