31804125 has 16 divisors (see below), whose sum is σ = 52922688. Its totient is φ = 16962000.

The previous prime is 31804121. The next prime is 31804159. The reversal of 31804125 is 52140813.

It is not a de Polignac number, because 31804125 - 2² = 31804121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31804095 and 31804104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31804121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42031 + ... + 42780.

It is an arithmetic number, because the mean of its divisors is an integer number (3307668).

Almost surely, 2^31804125 is an apocalyptic number.

It is an amenable number.

31804125 is a deficient number, since it is larger than the sum of its proper divisors (21118563).

31804125 is an equidigital number, since it uses as much as digits as its factorization.

31804125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84829 (or 84819 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 31804125 is about 5639.5146067725. The cubic root of 31804125 is about 316.8311088055.

Adding to 31804125 its reverse (52140813), we get a palindrome (83944938).

The spelling of 31804125 in words is "thirty-one million, eight hundred four thousand, one hundred twenty-five".