212423320 has 32 divisors (see below), whose sum is σ = 479080800. Its totient is φ = 84768768.

The previous prime is 212423317. The next prime is 212423353. The reversal of 212423320 is 23324212.

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, 11512 + ... + 23608.

It is an arithmetic number, because the mean of its divisors is an integer number (14971275).

Almost surely, 2^212423320 is an apocalyptic number.

212423320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212423320 is an abundant number, since it is smaller than the sum of its proper divisors (266657480).

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

212423320 is a wasteful number, since it uses less digits than its factorization.

212423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12547 (or 12543 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 212423320 is about 14574.7493975025. The cubic root of 212423320 is about 596.6698098451.

Adding to 212423320 its reverse (23324212), we get a palindrome (235747532).

The spelling of 212423320 in words is "two hundred twelve million, four hundred twenty-three thousand, three hundred twenty".