442655631 has 96 divisors (see below), whose sum is σ = 775272960. Its totient is φ = 248814720.

The previous prime is 442655621. The next prime is 442655657. The reversal of 442655631 is 136556244.

It is not a de Polignac number, because 442655631 - 2¹⁰ = 442654607 is a prime.

It is a super-2 number, since 2×442655631² = 391888015312016322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442655621) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3230995 + ... + 3231131.

It is an arithmetic number, because the mean of its divisors is an integer number (8075760).

Almost surely, 2^442655631 is an apocalyptic number.

442655631 is a deficient number, since it is larger than the sum of its proper divisors (332617329).

442655631 is a wasteful number, since it uses less digits than its factorization.

442655631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 217 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 442655631 is about 21039.3828569186. The cubic root of 442655631 is about 762.1176115815.

The spelling of 442655631 in words is "four hundred forty-two million, six hundred fifty-five thousand, six hundred thirty-one".