212312152 has 32 divisors (see below), whose sum is σ = 434760480. Its totient is φ = 96606720.

The previous prime is 212312143. The next prime is 212312173. The reversal of 212312152 is 251213212.

It is a super-2 number, since 2×212312152² = 90152899773742208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6993 + ... + 21760.

It is an arithmetic number, because the mean of its divisors is an integer number (13586265).

Almost surely, 2^212312152 is an apocalyptic number.

It is an amenable number.

212312152 is an abundant number, since it is smaller than the sum of its proper divisors (222448328).

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

212312152 is a wasteful number, since it uses less digits than its factorization.

212312152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28843 (or 28839 counting only the distinct ones).

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

The square root of 212312152 is about 14570.9351793219. The cubic root of 212312152 is about 596.5657061404.

Adding to 212312152 its reverse (251213212), we get a palindrome (463525364).

The spelling of 212312152 in words is "two hundred twelve million, three hundred twelve thousand, one hundred fifty-two".