31897342 has 8 divisors (see below), whose sum is σ = 48293496. Its totient is φ = 15799512.

The previous prime is 31897339. The next prime is 31897363. The reversal of 31897342 is 24379813.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74313 + ... + 74740.

It is an arithmetic number, because the mean of its divisors is an integer number (6036687).

Almost surely, 2^31897342 is an apocalyptic number.

31897342 is a deficient number, since it is larger than the sum of its proper divisors (16396154).

31897342 is a wasteful number, since it uses less digits than its factorization.

31897342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149162.

The product of its digits is 36288, while the sum is 37.

The square root of 31897342 is about 5647.7731894969. The cubic root of 31897342 is about 317.1403479150.

The spelling of 31897342 in words is "thirty-one million, eight hundred ninety-seven thousand, three hundred forty-two".