212331320 has 32 divisors (see below), whose sum is σ = 478483200. Its totient is φ = 84801408.

The previous prime is 212331313. The next prime is 212331323. The reversal of 212331320 is 23133212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212331323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24617 + ... + 32103.

It is an arithmetic number, because the mean of its divisors is an integer number (14952600).

Almost surely, 2^212331320 is an apocalyptic number.

212331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212331320 is an abundant number, since it is smaller than the sum of its proper divisors (266151880).

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

212331320 is a wasteful number, since it uses less digits than its factorization.

212331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207 (or 8203 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 212331320 is about 14571.5929122385. The cubic root of 212331320 is about 596.5836586806.

Adding to 212331320 its reverse (23133212), we get a palindrome (235464532).

The spelling of 212331320 in words is "two hundred twelve million, three hundred thirty-one thousand, three hundred twenty".