31768936 has 8 divisors (see below), whose sum is σ = 59566770. Its totient is φ = 15884464.

The previous prime is 31768927. The next prime is 31768951. The reversal of 31768936 is 63986713.

It can be written as a sum of positive squares in only one way, i.e., 31292836 + 476100 = 5594^2 + 690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 31768892 and 31768901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985551 + ... + 1985566.

Almost surely, 2^31768936 is an apocalyptic number.

It is an amenable number.

31768936 is a deficient number, since it is larger than the sum of its proper divisors (27797834).

31768936 is a wasteful number, since it uses less digits than its factorization.

31768936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971123 (or 3971119 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 31768936 is about 5636.3938826168. The cubic root of 31768936 is about 316.7142153285.

The spelling of 31768936 in words is "thirty-one million, seven hundred sixty-eight thousand, nine hundred thirty-six".