31116323 has 12 divisors (see below), whose sum is σ = 36696600. Its totient is φ = 26302752.

The previous prime is 31116313. The next prime is 31116329. The reversal of 31116323 is 32361113.

It is a happy number.

It is not a de Polignac number, because 31116323 - 2⁸ = 31116067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31116295 and 31116304.

It is not an unprimeable number, because it can be changed into a prime (31116329) 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 11 ways as a sum of consecutive naturals, for example, 773 + ... + 7926.

It is an arithmetic number, because the mean of its divisors is an integer number (3058050).

Almost surely, 2^31116323 is an apocalyptic number.

31116323 is a deficient number, since it is larger than the sum of its proper divisors (5580277).

31116323 is an equidigital number, since it uses as much as digits as its factorization.

31116323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8786 (or 8779 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 31116323 is about 5578.2006955648. The cubic root of 31116323 is about 314.5304939668.

Adding to 31116323 its reverse (32361113), we get a palindrome (63477436).

The spelling of 31116323 in words is "thirty-one million, one hundred sixteen thousand, three hundred twenty-three".