442535131 has 2 divisors, whose sum is σ = 442535132. Its totient is φ = 442535130.

The previous prime is 442535123. The next prime is 442535147. The reversal of 442535131 is 131535244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442535131 - 2³ = 442535123 is a prime.

It is a super-2 number, since 2×442535131² = 391674684338374322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442535131.

It is not a weakly prime, because it can be changed into another prime (442530131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221267565 + 221267566.

It is an arithmetic number, because the mean of its divisors is an integer number (221267566).

Almost surely, 2^442535131 is an apocalyptic number.

442535131 is a deficient number, since it is larger than the sum of its proper divisors (1).

442535131 is an equidigital number, since it uses as much as digits as its factorization.

442535131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 442535131 is about 21036.5189848511. The cubic root of 442535131 is about 762.0484505903.

The spelling of 442535131 in words is "four hundred forty-two million, five hundred thirty-five thousand, one hundred thirty-one".