31166425 has 24 divisors (see below), whose sum is σ = 39854592. Its totient is φ = 24168000.

The previous prime is 31166413. The next prime is 31166453. The reversal of 31166425 is 52466113.

It is not a de Polignac number, because 31166425 - 2⁵ = 31166393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31166393 and 31166402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163080 + ... + 163270.

It is an arithmetic number, because the mean of its divisors is an integer number (1660608).

Almost surely, 2^31166425 is an apocalyptic number.

It is an amenable number.

31166425 is a deficient number, since it is larger than the sum of its proper divisors (8688167).

31166425 is a wasteful number, since it uses less digits than its factorization.

31166425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 364 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 31166425 is about 5582.6897639041. The cubic root of 31166425 is about 314.6992173776.

The spelling of 31166425 in words is "thirty-one million, one hundred sixty-six thousand, four hundred twenty-five".