31113892 has 12 divisors (see below), whose sum is σ = 55921180. Its totient is φ = 15136416.

The previous prime is 31113889. The next prime is 31113911. The reversal of 31113892 is 29831113.

It can be written as a sum of positive squares in 2 ways, for example, as 12503296 + 18610596 = 3536^2 + 4314^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31113892.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104967 + ... + 105262.

Almost surely, 2^31113892 is an apocalyptic number.

It is an amenable number.

31113892 is a deficient number, since it is larger than the sum of its proper divisors (24807288).

31113892 is a wasteful number, since it uses less digits than its factorization.

31113892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210270 (or 210268 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 31113892 is about 5577.9827895037. The cubic root of 31113892 is about 314.5223027296.

The spelling of 31113892 in words is "thirty-one million, one hundred thirteen thousand, eight hundred ninety-two".