31604052 has 24 divisors (see below), whose sum is σ = 73948000. Its totient is φ = 10505376.

The previous prime is 31604051. The next prime is 31604057. The reversal of 31604052 is 25040613.

It is a happy number.

It is a super-2 number, since 2×31604052² = 1997632205637408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31604051) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1074 + ... + 8022.

Almost surely, 2^31604052 is an apocalyptic number.

It is an amenable number.

31604052 is an abundant number, since it is smaller than the sum of its proper divisors (42343948).

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

31604052 is a wasteful number, since it uses less digits than its factorization.

31604052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335 (or 7333 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 31604052 is about 5621.7481266951. The cubic root of 31604052 is about 316.1653383546.

Adding to 31604052 its reverse (25040613), we get a palindrome (56644665).

The spelling of 31604052 in words is "thirty-one million, six hundred four thousand, fifty-two".