231152212 has 12 divisors (see below), whose sum is σ = 404700660. Its totient is φ = 115523456.

The previous prime is 231152191. The next prime is 231152249. The reversal of 231152212 is 212251132.

231152212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 125350416 + 105801796 = 11196^2 + 10286^2 .

It is a super-2 number, since 2×231152212² = 106862690224985888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231152212.

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, 2287 + ... + 21622.

It is an arithmetic number, because the mean of its divisors is an integer number (33725055).

Almost surely, 2^231152212 is an apocalyptic number.

It is an amenable number.

231152212 is a deficient number, since it is larger than the sum of its proper divisors (173548448).

231152212 is a wasteful number, since it uses less digits than its factorization.

231152212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26330 (or 26328 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 231152212 is about 15203.6907361338. The cubic root of 231152212 is about 613.7139822319.

The spelling of 231152212 in words is "two hundred thirty-one million, one hundred fifty-two thousand, two hundred twelve".