31670125 has 8 divisors (see below), whose sum is σ = 39524472. Its totient is φ = 25336000.

The previous prime is 31670123. The next prime is 31670141. The reversal of 31670125 is 52107613.

It can be written as a sum of positive squares in 4 ways, for example, as 3992004 + 27678121 = 1998^2 + 5261^2 .

It is not a de Polignac number, because 31670125 - 2¹ = 31670123 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31670125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31670123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 126556 + ... + 126805.

It is an arithmetic number, because the mean of its divisors is an integer number (4940559).

Almost surely, 2^31670125 is an apocalyptic number.

It is an amenable number.

31670125 is a deficient number, since it is larger than the sum of its proper divisors (7854347).

31670125 is an equidigital number, since it uses as much as digits as its factorization.

31670125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253376 (or 253366 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 31670125 is about 5627.6216113026. The cubic root of 31670125 is about 316.3855153054.

Adding to 31670125 its reverse (52107613), we get a palindrome (83777738).

The spelling of 31670125 in words is "thirty-one million, six hundred seventy thousand, one hundred twenty-five".