21313631312 has 80 divisors (see below), whose sum is σ = 42553080000. Its totient is φ = 10338001920.

The previous prime is 21313631291. The next prime is 21313631333.

21313631312 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (21313631291) and next prime (21313631333).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42712439 + ... + 42712937.

It is an arithmetic number, because the mean of its divisors is an integer number (531913500).

Almost surely, 2^21313631312 is an apocalyptic number.

It is an amenable number.

21313631312 is a deficient number, since it is larger than the sum of its proper divisors (21239448688).

21313631312 is a wasteful number, since it uses less digits than its factorization.

21313631312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084 (or 1078 counting only the distinct ones).

The product of its digits is 1944, while the sum is 26.

The spelling of 21313631312 in words is "twenty-one billion, three hundred thirteen million, six hundred thirty-one thousand, three hundred twelve".