31104516 has 12 divisors (see below), whose sum is σ = 72577232. Its totient is φ = 10368168.

The previous prime is 31104511. The next prime is 31104529. The reversal of 31104516 is 61540113.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31104492 and 31104501.

It is not an unprimeable number, because it can be changed into a prime (31104511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296010 + ... + 1296033.

Almost surely, 2^31104516 is an apocalyptic number.

It is an amenable number.

31104516 is an abundant number, since it is smaller than the sum of its proper divisors (41472716).

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

31104516 is a wasteful number, since it uses less digits than its factorization.

31104516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592050 (or 2592048 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 31104516 is about 5577.1422789812. The cubic root of 31104516 is about 314.4907063677.

Adding to 31104516 its reverse (61540113), we get a palindrome (92644629).

It can be divided in two parts, 3110 and 4516, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 31104516 in words is "thirty-one million, one hundred four thousand, five hundred sixteen".