232312220 has 24 divisors (see below), whose sum is σ = 557549664. Its totient is φ = 79649856.

The previous prime is 232312189. The next prime is 232312237. The reversal of 232312220 is 22213232.

It is a super-2 number, since 2×232312220² = 107937935122656800, 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, 829547 + ... + 829826.

It is an arithmetic number, because the mean of its divisors is an integer number (23231236).

Almost surely, 2^232312220 is an apocalyptic number.

232312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232312220 is an abundant number, since it is smaller than the sum of its proper divisors (325237444).

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

232312220 is a wasteful number, since it uses less digits than its factorization.

232312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659389 (or 1659387 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 232312220 is about 15241.7918894072. The cubic root of 232312220 is about 614.7388848998.

Adding to 232312220 its reverse (22213232), we get a palindrome (254525452).

The spelling of 232312220 in words is "two hundred thirty-two million, three hundred twelve thousand, two hundred twenty".