326563312631 has 16 divisors (see below), whose sum is σ = 346174800384. Its totient is φ = 307411736544.

The previous prime is 326563312619. The next prime is 326563312651. The reversal of 326563312631 is 136213365623.

It is a cyclic number.

It is not a de Polignac number, because 326563312631 - 2²⁶ = 326496203767 is a prime.

It is a super-2 number, since 2×326563312631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326563312601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1538405 + ... + 1737761.

It is an arithmetic number, because the mean of its divisors is an integer number (21635925024).

Almost surely, 2^326563312631 is an apocalyptic number.

326563312631 is a deficient number, since it is larger than the sum of its proper divisors (19611487753).

326563312631 is a wasteful number, since it uses less digits than its factorization.

326563312631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200510.

The product of its digits is 349920, while the sum is 41.

The spelling of 326563312631 in words is "three hundred twenty-six billion, five hundred sixty-three million, three hundred twelve thousand, six hundred thirty-one".