231307475 has 12 divisors (see below), whose sum is σ = 327795984. Its totient is φ = 158610720.

The previous prime is 231307469. The next prime is 231307477. The reversal of 231307475 is 574703132.

It is not a de Polignac number, because 231307475 - 2⁴ = 231307459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231307477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660704 + ... + 661053.

It is an arithmetic number, because the mean of its divisors is an integer number (27316332).

Almost surely, 2^231307475 is an apocalyptic number.

231307475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231307475 is a deficient number, since it is larger than the sum of its proper divisors (96488509).

231307475 is a wasteful number, since it uses less digits than its factorization.

231307475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321774 (or 1321769 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 231307475 is about 15208.7959746983. The cubic root of 231307475 is about 613.8513603209.

The spelling of 231307475 in words is "two hundred thirty-one million, three hundred seven thousand, four hundred seventy-five".