3131313116 has 12 divisors (see below), whose sum is σ = 5484960432. Its totient is φ = 1564181568.

The previous prime is 3131313109. The next prime is 3131313121. The reversal of 3131313116 is 6113131313.

3131313116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3131313091 and 3131313100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363965 + ... + 372468.

It is an arithmetic number, because the mean of its divisors is an integer number (457080036).

Almost surely, 2^3131313116 is an apocalyptic number.

It is an amenable number.

3131313116 is a deficient number, since it is larger than the sum of its proper divisors (2353647316).

3131313116 is a wasteful number, since it uses less digits than its factorization.

3131313116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737500 (or 737498 counting only the distinct ones).

The product of its digits is 486, while the sum is 23.

The square root of 3131313116 is about 55958.1371741412. The cubic root of 3131313116 is about 1462.9927222467.

Adding to 3131313116 its reverse (6113131313), we get a palindrome (9244444429).

The spelling of 3131313116 in words is "three billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred sixteen".