32520400631 has 8 divisors (see below), whose sum is σ = 34437563424. Its totient is φ = 30603704320.

The previous prime is 32520400613. The next prime is 32520400637. The reversal of 32520400631 is 13600402523.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32520400631 - 2³⁰ = 31446658807 is a prime.

It is a super-2 number, since 2×32520400631² (a number of 22 digits) 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 32520400631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32520400637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32366 + ... + 257076.

It is an arithmetic number, because the mean of its divisors is an integer number (4304695428).

Almost surely, 2^32520400631 is an apocalyptic number.

32520400631 is a deficient number, since it is larger than the sum of its proper divisors (1917162793).

32520400631 is a wasteful number, since it uses less digits than its factorization.

32520400631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233241.

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 32520400631 in words is "thirty-two billion, five hundred twenty million, four hundred thousand, six hundred thirty-one".