326512631 has 4 divisors (see below), whose sum is σ = 334105992. Its totient is φ = 318919272.

The previous prime is 326512607. The next prime is 326512657. The reversal of 326512631 is 136215623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 326512631 - 2⁶ = 326512567 is a prime.

It is a super-2 number, since 2×326512631² = 213220996405084322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 326512594 and 326512603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326512691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3796616 + ... + 3796701.

It is an arithmetic number, because the mean of its divisors is an integer number (83526498).

Almost surely, 2^326512631 is an apocalyptic number.

326512631 is a deficient number, since it is larger than the sum of its proper divisors (7593361).

326512631 is an equidigital number, since it uses as much as digits as its factorization.

326512631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7593360.

The product of its digits is 6480, while the sum is 29.

The square root of 326512631 is about 18069.6605114761. The cubic root of 326512631 is about 688.5994351838.

The spelling of 326512631 in words is "three hundred twenty-six million, five hundred twelve thousand, six hundred thirty-one".