212631836 has 6 divisors (see below), whose sum is σ = 372105720. Its totient is φ = 106315916.

The previous prime is 212631829. The next prime is 212631893. The reversal of 212631836 is 638136212.

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 as a sum of consecutive naturals, namely, 26578976 + ... + 26578983.

It is an arithmetic number, because the mean of its divisors is an integer number (62017620).

Almost surely, 2^212631836 is an apocalyptic number.

It is an amenable number.

212631836 is a deficient number, since it is larger than the sum of its proper divisors (159473884).

212631836 is a wasteful number, since it uses less digits than its factorization.

212631836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53157963 (or 53157961 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 212631836 is about 14581.9009734671. The cubic root of 212631836 is about 596.8649775498.

The spelling of 212631836 in words is "two hundred twelve million, six hundred thirty-one thousand, eight hundred thirty-six".