231625479 has 32 divisors (see below), whose sum is σ = 331121664. Its totient is φ = 143700480.

The previous prime is 231625469. The next prime is 231625483. The reversal of 231625479 is 974526132.

It is not a de Polignac number, because 231625479 - 2⁷ = 231625351 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231625469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475374 + ... + 475860.

It is an arithmetic number, because the mean of its divisors is an integer number (10347552).

Almost surely, 2^231625479 is an apocalyptic number.

231625479 is a deficient number, since it is larger than the sum of its proper divisors (99496185).

231625479 is a wasteful number, since it uses less digits than its factorization.

231625479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its digits is 90720, while the sum is 39.

The square root of 231625479 is about 15219.2469918850. The cubic root of 231625479 is about 614.1325413169.

The spelling of 231625479 in words is "two hundred thirty-one million, six hundred twenty-five thousand, four hundred seventy-nine".