231489624 has 16 divisors (see below), whose sum is σ = 578724120. Its totient is φ = 77163200.

The previous prime is 231489581. The next prime is 231489647. The reversal of 231489624 is 426984132.

It is a super-2 number, since 2×231489624² = 107174892039322752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4822677 + ... + 4822724.

Almost surely, 2^231489624 is an apocalyptic number.

231489624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231489624 is an abundant number, since it is smaller than the sum of its proper divisors (347234496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231489624 is a wasteful number, since it uses less digits than its factorization.

231489624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9645410 (or 9645406 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 231489624 is about 15214.7830743655. The cubic root of 231489624 is about 614.0124490397.

The spelling of 231489624 in words is "two hundred thirty-one million, four hundred eighty-nine thousand, six hundred twenty-four".