326945631 has 4 divisors (see below), whose sum is σ = 435927512. Its totient is φ = 217963752.

The previous prime is 326945629. The next prime is 326945639. The reversal of 326945631 is 136549623.

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

It is not a de Polignac number, because 326945631 - 2¹ = 326945629 is a prime.

It is a super-2 number, since 2×326945631² = 213786891259976322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 326945631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326945639) 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 3 ways as a sum of consecutive naturals, for example, 54490936 + ... + 54490941.

It is an arithmetic number, because the mean of its divisors is an integer number (108981878).

Almost surely, 2^326945631 is an apocalyptic number.

326945631 is a deficient number, since it is larger than the sum of its proper divisors (108981881).

326945631 is a wasteful number, since it uses less digits than its factorization.

326945631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108981880.

The product of its digits is 116640, while the sum is 39.

The square root of 326945631 is about 18081.6379512477. The cubic root of 326945631 is about 688.9036927861.

The spelling of 326945631 in words is "three hundred twenty-six million, nine hundred forty-five thousand, six hundred thirty-one".