31120116 has 48 divisors (see below), whose sum is σ = 74680704. Its totient is φ = 10082176.

The previous prime is 31120109. The next prime is 31120121. The reversal of 31120116 is 61102113.

It is a junction number, because it is equal to n+sod(n) for n = 31120095 and 31120104.

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, 106066 + ... + 106358.

It is an arithmetic number, because the mean of its divisors is an integer number (1555848).

Almost surely, 2^31120116 is an apocalyptic number.

It is an amenable number.

31120116 is an abundant number, since it is smaller than the sum of its proper divisors (43560588).

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

31120116 is a wasteful number, since it uses less digits than its factorization.

31120116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 31120116 is about 5578.5406693866. The cubic root of 31120116 is about 314.5432736011.

Adding to 31120116 its reverse (61102113), we get a palindrome (92222229).

The spelling of 31120116 in words is "thirty-one million, one hundred twenty thousand, one hundred sixteen".