31504842 has 32 divisors (see below), whose sum is σ = 74131200. Its totient is φ = 9883584.

The previous prime is 31504819. The next prime is 31504873. The reversal of 31504842 is 24840513.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16242 + ... + 18077.

It is an arithmetic number, because the mean of its divisors is an integer number (2316600).

Almost surely, 2^31504842 is an apocalyptic number.

31504842 is an abundant number, since it is smaller than the sum of its proper divisors (42626358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31504842 is a wasteful number, since it uses less digits than its factorization.

31504842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34347 (or 34341 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 31504842 is about 5612.9174232301. The cubic root of 31504842 is about 315.8341609655.

The spelling of 31504842 in words is "thirty-one million, five hundred four thousand, eight hundred forty-two".