31420168 has 32 divisors (see below), whose sum is σ = 63687960. Its totient is φ = 14446080.

The previous prime is 31420163. The next prime is 31420183. The reversal of 31420168 is 86102413.

It can be written as a sum of positive squares in 4 ways, for example, as 13118884 + 18301284 = 3622^2 + 4278^2 .

It is not an unprimeable number, because it can be changed into a prime (31420163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40908 + ... + 41668.

Almost surely, 2^31420168 is an apocalyptic number.

It is an amenable number.

31420168 is an abundant number, since it is smaller than the sum of its proper divisors (32267792).

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

31420168 is a wasteful number, since it uses less digits than its factorization.

31420168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 31420168 is about 5605.3695685476. The cubic root of 31420168 is about 315.5509564966.

The spelling of 31420168 in words is "thirty-one million, four hundred twenty thousand, one hundred sixty-eight".