231654479 has 16 divisors (see below), whose sum is σ = 280250880. Its totient is φ = 187051680.

The previous prime is 231654463. The next prime is 231654487. The reversal of 231654479 is 974456132.

It is a cyclic number.

It is not a de Polignac number, because 231654479 - 2⁴ = 231654463 is a prime.

It is a super-2 number, since 2×231654479² = 107327595281522882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231654419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19262 + ... + 28884.

It is an arithmetic number, because the mean of its divisors is an integer number (17515680).

Almost surely, 2^231654479 is an apocalyptic number.

231654479 is a deficient number, since it is larger than the sum of its proper divisors (48596401).

231654479 is a wasteful number, since it uses less digits than its factorization.

231654479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9830.

The product of its digits is 181440, while the sum is 41.

The square root of 231654479 is about 15220.1997030262. The cubic root of 231654479 is about 614.1581704784.

The spelling of 231654479 in words is "two hundred thirty-one million, six hundred fifty-four thousand, four hundred seventy-nine".