212313438 has 24 divisors (see below), whose sum is σ = 460444608. Its totient is φ = 70704672.

The previous prime is 212313433. The next prime is 212313461. The reversal of 212313438 is 834313212.

212313438 is a `hidden beast` number, since 212 + 3 + 13 + 438 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16531 + ... + 26417.

It is an arithmetic number, because the mean of its divisors is an integer number (19185192).

Almost surely, 2^212313438 is an apocalyptic number.

212313438 is an abundant number, since it is smaller than the sum of its proper divisors (248131170).

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

212313438 is a wasteful number, since it uses less digits than its factorization.

212313438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088 (or 11085 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 212313438 is about 14570.9793082003. The cubic root of 212313438 is about 596.5669106278.

The spelling of 212313438 in words is "two hundred twelve million, three hundred thirteen thousand, four hundred thirty-eight".