325023781631 has 4 divisors (see below), whose sum is σ = 325470857712. Its totient is φ = 324576705552.

The previous prime is 325023781613. The next prime is 325023781651. The reversal of 325023781631 is 136187320523.

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 325023781631 - 2⁶ = 325023781567 is a prime.

It is a super-2 number, since 2×325023781631² (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 (325023781651) 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, 223536950 + ... + 223538403.

It is an arithmetic number, because the mean of its divisors is an integer number (81367714428).

Almost surely, 2^325023781631 is an apocalyptic number.

325023781631 is a deficient number, since it is larger than the sum of its proper divisors (447076081).

325023781631 is an equidigital number, since it uses as much as digits as its factorization.

325023781631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447076080.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 325023781631 in words is "three hundred twenty-five billion, twenty-three million, seven hundred eighty-one thousand, six hundred thirty-one".