31241604 has 12 divisors (see below), whose sum is σ = 72897104. Its totient is φ = 10413864.

The previous prime is 31241557. The next prime is 31241627. The reversal of 31241604 is 40614213.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1301722 + ... + 1301745.

Almost surely, 2^31241604 is an apocalyptic number.

It is an amenable number.

31241604 is an abundant number, since it is smaller than the sum of its proper divisors (41655500).

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

31241604 is a wasteful number, since it uses less digits than its factorization.

31241604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603474 (or 2603472 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 31241604 is about 5589.4189322326. The cubic root of 31241604 is about 314.9520511547.

Adding to 31241604 its reverse (40614213), we get a palindrome (71855817).

The spelling of 31241604 in words is "thirty-one million, two hundred forty-one thousand, six hundred four".