231428624 has 40 divisors (see below), whose sum is σ = 513330240. Its totient is φ = 99013248.

The previous prime is 231428597. The next prime is 231428629. The reversal of 231428624 is 426824132.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231428629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80687 + ... + 83505.

It is an arithmetic number, because the mean of its divisors is an integer number (12833256).

Almost surely, 2^231428624 is an apocalyptic number.

It is an amenable number.

231428624 is an abundant number, since it is smaller than the sum of its proper divisors (281901616).

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

231428624 is a wasteful number, since it uses less digits than its factorization.

231428624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567 (or 3561 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 231428624 is about 15212.7783129841. The cubic root of 231428624 is about 613.9585113453.

The spelling of 231428624 in words is "two hundred thirty-one million, four hundred twenty-eight thousand, six hundred twenty-four".