31604542 has 8 divisors (see below), whose sum is σ = 47551032. Its totient is φ = 15754200.

The previous prime is 31604533. The next prime is 31604557. The reversal of 31604542 is 24540613.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23209 + ... + 24532.

It is an arithmetic number, because the mean of its divisors is an integer number (5943879).

Almost surely, 2^31604542 is an apocalyptic number.

31604542 is a deficient number, since it is larger than the sum of its proper divisors (15946490).

31604542 is a wasteful number, since it uses less digits than its factorization.

31604542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48074.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 31604542 is about 5621.7917072762. The cubic root of 31604542 is about 316.1669723246.

The spelling of 31604542 in words is "thirty-one million, six hundred four thousand, five hundred forty-two".