31080125 has 8 divisors (see below), whose sum is σ = 38788152. Its totient is φ = 24864000.

The previous prime is 31080121. The next prime is 31080139. The reversal of 31080125 is 52108013.

It can be written as a sum of positive squares in 4 ways, for example, as 1779556 + 29300569 = 1334^2 + 5413^2 .

It is not a de Polignac number, because 31080125 - 2² = 31080121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31080097 and 31080106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31080121) 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, 124196 + ... + 124445.

It is an arithmetic number, because the mean of its divisors is an integer number (4848519).

Almost surely, 2^31080125 is an apocalyptic number.

It is an amenable number.

31080125 is a deficient number, since it is larger than the sum of its proper divisors (7708027).

31080125 is an equidigital number, since it uses as much as digits as its factorization.

31080125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248656 (or 248646 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 31080125 is about 5574.9551567703. The cubic root of 31080125 is about 314.4084809149.

Adding to 31080125 its reverse (52108013), we get a palindrome (83188138).

The spelling of 31080125 in words is "thirty-one million, eighty thousand, one hundred twenty-five".