31471396 has 12 divisors (see below), whose sum is σ = 60081840. Its totient is φ = 14305160.

The previous prime is 31471387. The next prime is 31471397. The reversal of 31471396 is 69317413.

It is not an unprimeable number, because it can be changed into a prime (31471397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357586 + ... + 357673.

It is an arithmetic number, because the mean of its divisors is an integer number (5006820).

Almost surely, 2^31471396 is an apocalyptic number.

It is an amenable number.

31471396 is a deficient number, since it is larger than the sum of its proper divisors (28610444).

31471396 is a wasteful number, since it uses less digits than its factorization.

31471396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715274 (or 715272 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 31471396 is about 5609.9372545511. The cubic root of 31471396 is about 315.7223566738.

The spelling of 31471396 in words is "thirty-one million, four hundred seventy-one thousand, three hundred ninety-six".