31604100225 has 48 divisors (see below), whose sum is σ = 53509414464. Its totient is φ = 16450560000.

The previous prime is 31604100217. The next prime is 31604100247. The reversal of 31604100225 is 52200140613.

It is not a de Polignac number, because 31604100225 - 2³ = 31604100217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31604100195 and 31604100204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5160165 + ... + 5166285.

It is an arithmetic number, because the mean of its divisors is an integer number (1114779468).

Almost surely, 2^31604100225 is an apocalyptic number.

It is an amenable number.

31604100225 is a deficient number, since it is larger than the sum of its proper divisors (21905314239).

31604100225 is a wasteful number, since it uses less digits than its factorization.

31604100225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778 (or 7773 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 31604100225 its reverse (52200140613), we get a palindrome (83804240838).

The spelling of 31604100225 in words is "thirty-one billion, six hundred four million, one hundred thousand, two hundred twenty-five".