31113922 has 12 divisors (see below), whose sum is σ = 54290790. Its totient is φ = 13334496.

The previous prime is 31113911. The next prime is 31113923. The reversal of 31113922 is 22931113.

It can be written as a sum of positive squares in only one way, i.e., 26615281 + 4498641 = 5159^2 + 2121^2 .

It is a super-2 number, since 2×31113922² = 1936152284444168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31113893 and 31113902.

It is not an unprimeable number, because it can be changed into a prime (31113923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158647 + ... + 158842.

Almost surely, 2^31113922 is an apocalyptic number.

31113922 is a deficient number, since it is larger than the sum of its proper divisors (23176868).

31113922 is a wasteful number, since it uses less digits than its factorization.

31113922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317505 (or 317498 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

The square root of 31113922 is about 5577.9854786473. The cubic root of 31113922 is about 314.5224038170.

The spelling of 31113922 in words is "thirty-one million, one hundred thirteen thousand, nine hundred twenty-two".