31113412 has 24 divisors (see below), whose sum is σ = 62526240. Its totient is φ = 13397760.

The previous prime is 31113409. The next prime is 31113413. The reversal of 31113412 is 21431113.

It is not an unprimeable number, because it can be changed into a prime (31113413) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 17773 + ... + 19444.

It is an arithmetic number, because the mean of its divisors is an integer number (2605260).

Almost surely, 2^31113412 is an apocalyptic number.

It is an amenable number.

31113412 is an abundant number, since it is smaller than the sum of its proper divisors (31412828).

31113412 is a wasteful number, since it uses less digits than its factorization.

31113412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37251 (or 37249 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 31113412 is about 5577.9397630308. The cubic root of 31113412 is about 314.5206853226.

Adding to 31113412 its reverse (21431113), we get a palindrome (52544525).

The spelling of 31113412 in words is "thirty-one million, one hundred thirteen thousand, four hundred twelve".