31319104 has 14 divisors (see below), whose sum is σ = 62148974. Its totient is φ = 15659520.

The previous prime is 31319081. The next prime is 31319111. The reversal of 31319104 is 40191313.

It can be written as a sum of positive squares in only one way, i.e., 29680704 + 1638400 = 5448^2 + 1280^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244617 + ... + 244744.

Almost surely, 2^31319104 is an apocalyptic number.

It is an amenable number.

31319104 is a deficient number, since it is larger than the sum of its proper divisors (30829870).

31319104 is an equidigital number, since it uses as much as digits as its factorization.

31319104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489373 (or 489363 counting only the distinct ones).

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

The square root of 31319104 is about 5596.3473802115. The cubic root of 31319104 is about 315.2122664367.

The spelling of 31319104 in words is "thirty-one million, three hundred nineteen thousand, one hundred four".