213318318312 has 128 divisors (see below), whose sum is σ = 655274736000. Its totient is φ = 63756357120.

The previous prime is 213318318253. The next prime is 213318318413. The reversal of 213318318312 is 213813813312.

It is a happy number.

213318318312 is a `hidden beast` number, since 2 + 1 + 331 + 8 + 3 + 1 + 8 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441487 + ... + 788382.

It is an arithmetic number, because the mean of its divisors is an integer number (5119333875).

Almost surely, 2^213318318312 is an apocalyptic number.

213318318312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213318318312 is an abundant number, since it is smaller than the sum of its proper divisors (441956417688).

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

213318318312 is a wasteful number, since it uses less digits than its factorization.

213318318312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229968 (or 1229958 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The spelling of 213318318312 in words is "two hundred thirteen billion, three hundred eighteen million, three hundred eighteen thousand, three hundred twelve".