212345934 has 16 divisors (see below), whose sum is σ = 426894672. Its totient is φ = 70414848.

The previous prime is 212345927. The next prime is 212345951. The reversal of 212345934 is 439543212.

It is a junction number, because it is equal to n+sod(n) for n = 212345895 and 212345904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90529 + ... + 92844.

It is an arithmetic number, because the mean of its divisors is an integer number (26680917).

Almost surely, 2^212345934 is an apocalyptic number.

212345934 is an abundant number, since it is smaller than the sum of its proper divisors (214548738).

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

212345934 is a wasteful number, since it uses less digits than its factorization.

212345934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183571.

The product of its digits is 25920, while the sum is 33.

The square root of 212345934 is about 14572.0943587392. The cubic root of 212345934 is about 596.5973452681.

The spelling of 212345934 in words is "two hundred twelve million, three hundred forty-five thousand, nine hundred thirty-four".