31472742 has 16 divisors (see below), whose sum is σ = 71937792. Its totient is φ = 8992200.

The previous prime is 31472723. The next prime is 31472773. The reversal of 31472742 is 24727413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374634 + ... + 374717.

It is an arithmetic number, because the mean of its divisors is an integer number (4496112).

Almost surely, 2^31472742 is an apocalyptic number.

31472742 is an abundant number, since it is smaller than the sum of its proper divisors (40465050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31472742 is a wasteful number, since it uses less digits than its factorization.

31472742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749363.

The product of its digits is 9408, while the sum is 30.

The square root of 31472742 is about 5610.0572189595. The cubic root of 31472742 is about 315.7268576523.

The spelling of 31472742 in words is "thirty-one million, four hundred seventy-two thousand, seven hundred forty-two".