31425339 has 16 divisors (see below), whose sum is σ = 45811584. Its totient is φ = 19003200.

The previous prime is 31425323. The next prime is 31425353. The reversal of 31425339 is 93352413.

It is not a de Polignac number, because 31425339 - 2⁴ = 31425323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31425319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20479 + ... + 21959.

It is an arithmetic number, because the mean of its divisors is an integer number (2863224).

Almost surely, 2^31425339 is an apocalyptic number.

31425339 is a deficient number, since it is larger than the sum of its proper divisors (14386245).

31425339 is a wasteful number, since it uses less digits than its factorization.

31425339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its digits is 9720, while the sum is 30.

The square root of 31425339 is about 5605.8308037257. The cubic root of 31425339 is about 315.5682662331.

The spelling of 31425339 in words is "thirty-one million, four hundred twenty-five thousand, three hundred thirty-nine".