31368456 has 96 divisors (see below), whose sum is σ = 98155200. Its totient is φ = 8864640.

The previous prime is 31368437. The next prime is 31368473. The reversal of 31368456 is 65486313.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 31368456.

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, 54651 + ... + 55221.

It is an arithmetic number, because the mean of its divisors is an integer number (1022450).

Almost surely, 2^31368456 is an apocalyptic number.

31368456 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31368456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49077600).

31368456 is an abundant number, since it is smaller than the sum of its proper divisors (66786744).

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

31368456 is a wasteful number, since it uses less digits than its factorization.

31368456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 692 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 31368456 is about 5600.7549491118. The cubic root of 31368456 is about 315.3777478820.

The spelling of 31368456 in words is "thirty-one million, three hundred sixty-eight thousand, four hundred fifty-six".