20312443636331 has 96 divisors (see below), whose sum is σ = 26746782289920. Its totient is φ = 15081935616000.

The previous prime is 20312443636327. The next prime is 20312443636343. The reversal of 20312443636331 is 13363634421302.

It is not a de Polignac number, because 20312443636331 - 2² = 20312443636327 is a prime.

It is a super-2 number, since 2×20312443636331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20312443636301) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 563168360 + ... + 563204426.

It is an arithmetic number, because the mean of its divisors is an integer number (278612315520).

Almost surely, 2^{20312443636331} is an apocalyptic number.

20312443636331 is a deficient number, since it is larger than the sum of its proper divisors (6434338653589).

20312443636331 is a wasteful number, since it uses less digits than its factorization.

20312443636331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36457 (or 36446 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 41.

The spelling of 20312443636331 in words is "twenty trillion, three hundred twelve billion, four hundred forty-three million, six hundred thirty-six thousand, three hundred thirty-one".