31897962 has 20 divisors (see below), whose sum is σ = 71475426. Its totient is φ = 10632600.

The previous prime is 31897951. The next prime is 31897969. The reversal of 31897962 is 26979813.

It can be written as a sum of positive squares in only one way, i.e., 28291761 + 3606201 = 5319^2 + 1899^2 .

It is not an unprimeable number, because it can be changed into a prime (31897969) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 98289 + ... + 98612.

Almost surely, 2^31897962 is an apocalyptic number.

31897962 is an abundant number, since it is smaller than the sum of its proper divisors (39577464).

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

31897962 is a wasteful number, since it uses less digits than its factorization.

31897962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196915 (or 196906 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 31897962 is about 5647.8280781199. The cubic root of 31897962 is about 317.1424026916.

The spelling of 31897962 in words is "thirty-one million, eight hundred ninety-seven thousand, nine hundred sixty-two".