31116425 has 12 divisors (see below), whose sum is σ = 38790300. Its totient is φ = 24760320.

The previous prime is 31116377. The next prime is 31116427. The reversal of 31116425 is 52461113.

It can be written as a sum of positive squares in 6 ways, for example, as 24649 + 31091776 = 157^2 + 5576^2 .

It is not a de Polignac number, because 31116425 - 2⁶ = 31116361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31116425.

It is not an unprimeable number, because it can be changed into a prime (31116427) by changing a digit.

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, 1601 + ... + 8049.

It is an arithmetic number, because the mean of its divisors is an integer number (3232525).

Almost surely, 2^31116425 is an apocalyptic number.

It is an amenable number.

31116425 is a deficient number, since it is larger than the sum of its proper divisors (7673875).

31116425 is a wasteful number, since it uses less digits than its factorization.

31116425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652 (or 6647 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 31116425 is about 5578.2098382904. The cubic root of 31116425 is about 314.5308376457.

Adding to 31116425 its reverse (52461113), we get a palindrome (83577538).

The spelling of 31116425 in words is "thirty-one million, one hundred sixteen thousand, four hundred twenty-five".