31108712 has 16 divisors (see below), whose sum is σ = 59905860. Its totient is φ = 15133824.

The previous prime is 31108669. The next prime is 31108729. The reversal of 31108712 is 21780113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21585316 + 9523396 = 4646^2 + 3086^2 .

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, 52253 + ... + 52844.

Almost surely, 2^31108712 is an apocalyptic number.

It is an amenable number.

31108712 is a deficient number, since it is larger than the sum of its proper divisors (28797148).

31108712 is a wasteful number, since it uses less digits than its factorization.

31108712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105140 (or 105136 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 31108712 is about 5577.5184446132. The cubic root of 31108712 is about 314.5048473333.

Adding to 31108712 its reverse (21780113), we get a palindrome (52888825).

The spelling of 31108712 in words is "thirty-one million, one hundred eight thousand, seven hundred twelve".