31242325 has 6 divisors (see below), whose sum is σ = 38740514. Its totient is φ = 24993840.

The previous prime is 31242317. The next prime is 31242331. The reversal of 31242325 is 52324213.

It can be written as a sum of positive squares in 3 ways, for example, as 1572516 + 29669809 = 1254^2 + 5447^2 .

It is not a de Polignac number, because 31242325 - 2³ = 31242317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31242296 and 31242305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 624822 + ... + 624871.

Almost surely, 2^31242325 is an apocalyptic number.

It is an amenable number.

31242325 is a deficient number, since it is larger than the sum of its proper divisors (7498189).

31242325 is a wasteful number, since it uses less digits than its factorization.

31242325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249703 (or 1249698 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 31242325 is about 5589.4834287258. The cubic root of 31242325 is about 314.9544739782.

Adding to 31242325 its reverse (52324213), we get a palindrome (83566538).

The spelling of 31242325 in words is "thirty-one million, two hundred forty-two thousand, three hundred twenty-five".