231040688 has 10 divisors (see below), whose sum is σ = 447641364. Its totient is φ = 115520336.

The previous prime is 231040669. The next prime is 231040697. The reversal of 231040688 is 886040132.

231040688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7220006 + ... + 7220037.

Almost surely, 2^231040688 is an apocalyptic number.

It is an amenable number.

231040688 is a deficient number, since it is larger than the sum of its proper divisors (216600676).

231040688 is a wasteful number, since it uses less digits than its factorization.

231040688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14440051 (or 14440045 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 231040688 is about 15200.0226315621. The cubic root of 231040688 is about 613.6152668329.

The spelling of 231040688 in words is "two hundred thirty-one million, forty thousand, six hundred eighty-eight".