213656656312 has 16 divisors (see below), whose sum is σ = 437024979000. Its totient is φ = 97116661920.

The previous prime is 213656656273. The next prime is 213656656337.

213656656312 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213958187 + ... + 1213958362.

Almost surely, 2^213656656312 is an apocalyptic number.

213656656312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213656656312 is an abundant number, since it is smaller than the sum of its proper divisors (223368322688).

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

213656656312 is a wasteful number, since it uses less digits than its factorization.

213656656312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427916566 (or 2427916562 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 46.

It can be divided in two parts, 213656 and 656312, that added together give a palindrome (869968).

The spelling of 213656656312 in words is "two hundred thirteen billion, six hundred fifty-six million, six hundred fifty-six thousand, three hundred twelve".