3131211113 has 16 divisors (see below), whose sum is σ = 3433466880. Its totient is φ = 2842296576.

The previous prime is 3131211103. The next prime is 3131211137. The reversal of 3131211113 is 3111121313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131211113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 3131211091 and 3131211100.

It is not an unprimeable number, because it can be changed into a prime (3131211103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532970 + ... + 538812.

It is an arithmetic number, because the mean of its divisors is an integer number (214591680).

Almost surely, 2^3131211113 is an apocalyptic number.

It is an amenable number.

3131211113 is a deficient number, since it is larger than the sum of its proper divisors (302255767).

3131211113 is a wasteful number, since it uses less digits than its factorization.

3131211113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6976.

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

The square root of 3131211113 is about 55957.2257443130. The cubic root of 3131211113 is about 1462.9768363376.

Adding to 3131211113 its reverse (3111121313), we get a palindrome (6242332426).

The spelling of 3131211113 in words is "three billion, one hundred thirty-one million, two hundred eleven thousand, one hundred thirteen".