31113116 has 6 divisors (see below), whose sum is σ = 54447960. Its totient is φ = 15556556.

The previous prime is 31113113. The next prime is 31113167. The reversal of 31113116 is 61131113.

It is a junction number, because it is equal to n+sod(n) for n = 31113094 and 31113103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3889136 + ... + 3889143.

It is an arithmetic number, because the mean of its divisors is an integer number (9074660).

Almost surely, 2^31113116 is an apocalyptic number.

It is an amenable number.

31113116 is a deficient number, since it is larger than the sum of its proper divisors (23334844).

31113116 is a wasteful number, since it uses less digits than its factorization.

31113116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778283 (or 7778281 counting only the distinct ones).

The product of its digits is 54, while the sum is 17.

The square root of 31113116 is about 5577.9132298737. The cubic root of 31113116 is about 314.5196879133.

Adding to 31113116 its reverse (61131113), we get a palindrome (92244229).

The spelling of 31113116 in words is "thirty-one million, one hundred thirteen thousand, one hundred sixteen".