31626125 has 12 divisors (see below), whose sum is σ = 39548028. Its totient is φ = 25250600.

The previous prime is 31626109. The next prime is 31626131. The reversal of 31626125 is 52162613.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 30614089 = 1006^2 + 5533^2 .

It is not a de Polignac number, because 31626125 - 2⁴ = 31626109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31626094 and 31626103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62624 + ... + 63126.

It is an arithmetic number, because the mean of its divisors is an integer number (3295669).

Almost surely, 2^31626125 is an apocalyptic number.

It is an amenable number.

31626125 is a deficient number, since it is larger than the sum of its proper divisors (7921903).

31626125 is an frugal number, since it uses more digits than its factorization.

31626125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 508 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 31626125 is about 5623.7109634120. The cubic root of 31626125 is about 316.2389269506.

Adding to 31626125 its reverse (52162613), we get a palindrome (83788738).

The spelling of 31626125 in words is "thirty-one million, six hundred twenty-six thousand, one hundred twenty-five".