31130425 has 6 divisors (see below), whose sum is σ = 38601758. Its totient is φ = 24904320.

The previous prime is 31130423. The next prime is 31130441. The reversal of 31130425 is 52403113.

It can be written as a sum of positive squares in 3 ways, for example, as 5184 + 31125241 = 72^2 + 5579^2 .

It is not a de Polignac number, because 31130425 - 2¹ = 31130423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31130423) 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 5 ways as a sum of consecutive naturals, for example, 622584 + ... + 622633.

Almost surely, 2^31130425 is an apocalyptic number.

It is an amenable number.

31130425 is a deficient number, since it is larger than the sum of its proper divisors (7471333).

31130425 is a wasteful number, since it uses less digits than its factorization.

31130425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245227 (or 1245222 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 31130425 is about 5579.4645800471. The cubic root of 31130425 is about 314.5780021415.

Adding to 31130425 its reverse (52403113), we get a palindrome (83533538).

The spelling of 31130425 in words is "thirty-one million, one hundred thirty thousand, four hundred twenty-five".