231263212 has 12 divisors (see below), whose sum is σ = 426011320. Its totient is φ = 109545696.

The previous prime is 231263203. The next prime is 231263233. The reversal of 231263212 is 212362132.

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, 1521393 + ... + 1521544.

Almost surely, 2^231263212 is an apocalyptic number.

It is an amenable number.

231263212 is a deficient number, since it is larger than the sum of its proper divisors (194748108).

231263212 is a wasteful number, since it uses less digits than its factorization.

231263212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042960 (or 3042958 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 231263212 is about 15207.3407274250. The cubic root of 231263212 is about 613.8122022895.

The spelling of 231263212 in words is "two hundred thirty-one million, two hundred sixty-three thousand, two hundred twelve".