31368896 has 56 divisors (see below), whose sum is σ = 68915280. Its totient is φ = 14072832.

The previous prime is 31368877. The next prime is 31368907. The reversal of 31368896 is 69886313.

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 7 ways as a sum of consecutive naturals, for example, 30275 + ... + 31293.

It is an arithmetic number, because the mean of its divisors is an integer number (1230630).

Almost surely, 2^31368896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31368896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34457640).

31368896 is an abundant number, since it is smaller than the sum of its proper divisors (37546384).

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

31368896 is a wasteful number, since it uses less digits than its factorization.

31368896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1071 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 31368896 is about 5600.7942293928. The cubic root of 31368896 is about 315.3792224585.

The spelling of 31368896 in words is "thirty-one million, three hundred sixty-eight thousand, eight hundred ninety-six".