31396892 has 36 divisors (see below), whose sum is σ = 61447680. Its totient is φ = 13986432.

The previous prime is 31396889. The next prime is 31396913. The reversal of 31396892 is 29869313.

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 11 ways as a sum of consecutive naturals, for example, 23909 + ... + 25187.

It is an arithmetic number, because the mean of its divisors is an integer number (1706880).

Almost surely, 2^31396892 is an apocalyptic number.

It is an amenable number.

31396892 is a deficient number, since it is larger than the sum of its proper divisors (30050788).

31396892 is a wasteful number, since it uses less digits than its factorization.

31396892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1317 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 31396892 is about 5603.2929603939. The cubic root of 31396892 is about 315.4730174005.

The spelling of 31396892 in words is "thirty-one million, three hundred ninety-six thousand, eight hundred ninety-two".