231020688 has 20 divisors (see below), whose sum is σ = 596803568. Its totient is φ = 77006880.

The previous prime is 231020653. The next prime is 231020689. The reversal of 231020688 is 886020132.

It is not an unprimeable number, because it can be changed into a prime (231020689) by changing a digit.

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, 2406418 + ... + 2406513.

Almost surely, 2^231020688 is an apocalyptic number.

It is an amenable number.

231020688 is an abundant number, since it is smaller than the sum of its proper divisors (365782880).

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

231020688 is a wasteful number, since it uses less digits than its factorization.

231020688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812942 (or 4812936 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 231020688 is about 15199.3647235666. The cubic root of 231020688 is about 613.5975604864.

The spelling of 231020688 in words is "two hundred thirty-one million, twenty thousand, six hundred eighty-eight".