212312939 has 4 divisors (see below), whose sum is σ = 212342256. Its totient is φ = 212283624.

The previous prime is 212312929. The next prime is 212312951. The reversal of 212312939 is 939213212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212312939 - 2⁴ = 212312923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212312929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4937 + ... + 21189.

It is an arithmetic number, because the mean of its divisors is an integer number (53085564).

Almost surely, 2^212312939 is an apocalyptic number.

212312939 is a deficient number, since it is larger than the sum of its proper divisors (29317).

212312939 is a wasteful number, since it uses less digits than its factorization.

212312939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29316.

The product of its digits is 5832, while the sum is 32.

The square root of 212312939 is about 14570.9621851132. The cubic root of 212312939 is about 596.5664432573.

The spelling of 212312939 in words is "two hundred twelve million, three hundred twelve thousand, nine hundred thirty-nine".