231261039 has 6 divisors (see below), whose sum is σ = 334043736. Its totient is φ = 154174020.

The previous prime is 231260983. The next prime is 231261073. The reversal of 231261039 is 930162132.

231261039 is a `hidden beast` number, since 2 + 3 + 12 + 610 + 39 = 666.

It is not a de Polignac number, because 231261039 - 2²⁷ = 97043311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231261089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12847827 + ... + 12847844.

It is an arithmetic number, because the mean of its divisors is an integer number (55673956).

Almost surely, 2^231261039 is an apocalyptic number.

231261039 is a deficient number, since it is larger than the sum of its proper divisors (102782697).

231261039 is a wasteful number, since it uses less digits than its factorization.

231261039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25695677 (or 25695674 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 231261039 is about 15207.2692814982. The cubic root of 231261039 is about 613.8102797787.

The spelling of 231261039 in words is "two hundred thirty-one million, two hundred sixty-one thousand, thirty-nine".