31430168 has 96 divisors (see below), whose sum is σ = 77196240. Its totient is φ = 11854080.

The previous prime is 31430143. The next prime is 31430177. The reversal of 31430168 is 86103413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159446 + ... + 159642.

Almost surely, 2^31430168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31430168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38598120).

31430168 is an abundant number, since it is smaller than the sum of its proper divisors (45766072).

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

31430168 is a wasteful number, since it uses less digits than its factorization.

31430168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 31430168 is about 5606.2614994308. The cubic root of 31430168 is about 315.5844294224.

The spelling of 31430168 in words is "thirty-one million, four hundred thirty thousand, one hundred sixty-eight".