31423168 has 28 divisors (see below), whose sum is σ = 71264272. Its totient is φ = 13466880.

The previous prime is 31423159. The next prime is 31423187. The reversal of 31423168 is 86132413.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 34623 + ... + 35518.

Almost surely, 2^31423168 is an apocalyptic number.

It is an amenable number.

31423168 is an abundant number, since it is smaller than the sum of its proper divisors (39841104).

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

31423168 is an equidigital number, since it uses as much as digits as its factorization.

31423168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70160 (or 70150 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 31423168 is about 5605.6371627140. The cubic root of 31423168 is about 315.5609991199.

The spelling of 31423168 in words is "thirty-one million, four hundred twenty-three thousand, one hundred sixty-eight".