231711472 has 20 divisors (see below), whose sum is σ = 452917440. Its totient is φ = 114829568.

The previous prime is 231711461. The next prime is 231711481. The reversal of 231711472 is 274117132.

It is a self number, because there is not a number n which added to its sum of digits gives 231711472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62272 + ... + 65887.

It is an arithmetic number, because the mean of its divisors is an integer number (22645872).

Almost surely, 2^231711472 is an apocalyptic number.

It is an amenable number.

231711472 is a deficient number, since it is larger than the sum of its proper divisors (221205968).

231711472 is a wasteful number, since it uses less digits than its factorization.

231711472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128280 (or 128274 counting only the distinct ones).

The product of its digits is 2352, while the sum is 28.

The square root of 231711472 is about 15222.0718694927. The cubic root of 231711472 is about 614.2085326193.

The spelling of 231711472 in words is "two hundred thirty-one million, seven hundred eleven thousand, four hundred seventy-two".