31788952 has 16 divisors (see below), whose sum is σ = 64189440. Its totient is φ = 14671776.

The previous prime is 31788947. The next prime is 31788961. The reversal of 31788952 is 25988713.

It is a junction number, because it is equal to n+sod(n) for n = 31788899 and 31788908.

It is a congruent number.

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, 152728 + ... + 152935.

It is an arithmetic number, because the mean of its divisors is an integer number (4011840).

Almost surely, 2^31788952 is an apocalyptic number.

It is an amenable number.

31788952 is an abundant number, since it is smaller than the sum of its proper divisors (32400488).

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

31788952 is a wasteful number, since it uses less digits than its factorization.

31788952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305682 (or 305678 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 31788952 is about 5638.1692064002. The cubic root of 31788952 is about 316.7807165676.

The spelling of 31788952 in words is "thirty-one million, seven hundred eighty-eight thousand, nine hundred fifty-two".