231439896 has 64 divisors (see below), whose sum is σ = 644258400. Its totient is φ = 76982400.

The previous prime is 231439883. The next prime is 231439903. The reversal of 231439896 is 698934132.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141966 + ... + 143586.

Almost surely, 2^231439896 is an apocalyptic number.

It is an amenable number.

231439896 is an abundant number, since it is smaller than the sum of its proper divisors (412818504).

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

231439896 is a wasteful number, since it uses less digits than its factorization.

231439896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297 (or 2287 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 231439896 is about 15213.1487864939. The cubic root of 231439896 is about 613.9684790377.

The spelling of 231439896 in words is "two hundred thirty-one million, four hundred thirty-nine thousand, eight hundred ninety-six".