31838364 has 72 divisors (see below), whose sum is σ = 84983808. Its totient is φ = 10035360.

The previous prime is 31838353. The next prime is 31838377. The reversal of 31838364 is 46383813.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52149 + ... + 52755.

Almost surely, 2^31838364 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 31838364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42491904).

31838364 is an abundant number, since it is smaller than the sum of its proper divisors (53145444).

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

31838364 is a wasteful number, since it uses less digits than its factorization.

31838364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 690 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 31838364 is about 5642.5494237977. The cubic root of 31838364 is about 316.9447637673.

The spelling of 31838364 in words is "thirty-one million, eight hundred thirty-eight thousand, three hundred sixty-four".