31742425 has 36 divisors (see below), whose sum is σ = 46563984. Its totient is φ = 21278400.

The previous prime is 31742401. The next prime is 31742441. The reversal of 31742425 is 52424713.

It is not a de Polignac number, because 31742425 - 2⁵ = 31742393 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31742393 and 31742402.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 46134 + ... + 46816.

It is an arithmetic number, because the mean of its divisors is an integer number (1293444).

Almost surely, 2^31742425 is an apocalyptic number.

It is an amenable number.

31742425 is a deficient number, since it is larger than the sum of its proper divisors (14821559).

31742425 is a wasteful number, since it uses less digits than its factorization.

31742425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 712 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 31742425 is about 5634.0416221395. The cubic root of 31742425 is about 316.6260920621.

The spelling of 31742425 in words is "thirty-one million, seven hundred forty-two thousand, four hundred twenty-five".