31680052 has 12 divisors (see below), whose sum is σ = 55545280. Its totient is φ = 15809976.

The previous prime is 31680043. The next prime is 31680053. The reversal of 31680052 is 25008613.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31679999 and 31680026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31680053) 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 3 ways as a sum of consecutive naturals, for example, 5052 + ... + 9427.

Almost surely, 2^31680052 is an apocalyptic number.

It is an amenable number.

31680052 is a deficient number, since it is larger than the sum of its proper divisors (23865228).

31680052 is a wasteful number, since it uses less digits than its factorization.

31680052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15030 (or 15028 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 31680052 is about 5628.5035311351. The cubic root of 31680052 is about 316.4185688631.

Adding to 31680052 its reverse (25008613), we get a palindrome (56688665).

The spelling of 31680052 in words is "thirty-one million, six hundred eighty thousand, fifty-two".