231972712 has 8 divisors (see below), whose sum is σ = 434948850. Its totient is φ = 115986352.

The previous prime is 231972619. The next prime is 231972749. The reversal of 231972712 is 217279132.

It can be written as a sum of positive squares in only one way, i.e., 204661636 + 27311076 = 14306^2 + 5226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×231972712² = 107622678225269888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14498287 + ... + 14498302.

Almost surely, 2^231972712 is an apocalyptic number.

It is an amenable number.

231972712 is a deficient number, since it is larger than the sum of its proper divisors (202976138).

231972712 is a wasteful number, since it uses less digits than its factorization.

231972712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28996595 (or 28996591 counting only the distinct ones).

The product of its digits is 10584, while the sum is 34.

The square root of 231972712 is about 15230.6504129010. The cubic root of 231972712 is about 614.4392729910.

The spelling of 231972712 in words is "two hundred thirty-one million, nine hundred seventy-two thousand, seven hundred twelve".