31314836 has 48 divisors (see below), whose sum is σ = 66232320. Its totient is φ = 12670560.

The previous prime is 31314827. The next prime is 31314841. The reversal of 31314836 is 63841313.

It is a junction number, because it is equal to n+sod(n) for n = 31314799 and 31314808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36905 + ... + 37743.

It is an arithmetic number, because the mean of its divisors is an integer number (1379840).

Almost surely, 2^31314836 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 31314836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33116160).

31314836 is an abundant number, since it is smaller than the sum of its proper divisors (34917484).

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

31314836 is a wasteful number, since it uses less digits than its factorization.

31314836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 922 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 31314836 is about 5595.9660470736. The cubic root of 31314836 is about 315.1979473056.

The spelling of 31314836 in words is "thirty-one million, three hundred fourteen thousand, eight hundred thirty-six".