31104312 has 32 divisors (see below), whose sum is σ = 78247680. Its totient is φ = 10303200.

The previous prime is 31104301. The next prime is 31104323. The reversal of 31104312 is 21340113.

It is an interprime number because it is at equal distance from previous prime (31104301) and next prime (31104323).

It is a junction number, because it is equal to n+sod(n) for n = 31104291 and 31104300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64 + ... + 7887.

It is an arithmetic number, because the mean of its divisors is an integer number (2445240).

Almost surely, 2^31104312 is an apocalyptic number.

It is an amenable number.

31104312 is an abundant number, since it is smaller than the sum of its proper divisors (47143368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31104312 is a wasteful number, since it uses less digits than its factorization.

31104312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8123 (or 8119 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 31104312 is about 5577.1239900149. The cubic root of 31104312 is about 314.4900188336.

Adding to 31104312 its reverse (21340113), we get a palindrome (52444425).

The spelling of 31104312 in words is "thirty-one million, one hundred four thousand, three hundred twelve".