31104504 has 24 divisors (see below), whose sum is σ = 84241560. Its totient is φ = 10368144.

The previous prime is 31104473. The next prime is 31104511. The reversal of 31104504 is 40540113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215932 + ... + 216075.

It is an arithmetic number, because the mean of its divisors is an integer number (3510065).

Almost surely, 2^31104504 is an apocalyptic number.

It is an amenable number.

31104504 is an abundant number, since it is smaller than the sum of its proper divisors (53137056).

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

31104504 is a wasteful number, since it uses less digits than its factorization.

31104504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432019 (or 432012 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 31104504 is about 5577.1412031613. The cubic root of 31104504 is about 314.4906659246.

Adding to 31104504 its reverse (40540113), we get a palindrome (71644617).

The spelling of 31104504 in words is "thirty-one million, one hundred four thousand, five hundred four".