31116316 has 24 divisors (see below), whose sum is σ = 67890816. Its totient is φ = 12123120.

The previous prime is 31116313. The next prime is 31116329. The reversal of 31116316 is 61361113.

It is a happy number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31116313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 50206 + ... + 50821.

It is an arithmetic number, because the mean of its divisors is an integer number (2828784).

Almost surely, 2^31116316 is an apocalyptic number.

It is an amenable number.

31116316 is an abundant number, since it is smaller than the sum of its proper divisors (36774500).

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

31116316 is a wasteful number, since it uses less digits than its factorization.

31116316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101049 (or 101047 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

The square root of 31116316 is about 5578.2000681223. The cubic root of 31116316 is about 314.5304703809.

Adding to 31116316 its reverse (61361113), we get a palindrome (92477429).

The spelling of 31116316 in words is "thirty-one million, one hundred sixteen thousand, three hundred sixteen".