3131112111113 has 4 divisors (see below), whose sum is σ = 3578413841280. Its totient is φ = 2683810380948.

The previous prime is 3131112111047. The next prime is 3131112111119. The reversal of 3131112111113 is 3111112111313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3131112111113 - 2³⁸ = 2856234204169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3131112111119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223650865073 + ... + 223650865086.

It is an arithmetic number, because the mean of its divisors is an integer number (894603460320).

Almost surely, 2^{3131112111113} is an apocalyptic number.

It is an amenable number.

3131112111113 is a deficient number, since it is larger than the sum of its proper divisors (447301730167).

3131112111113 is an equidigital number, since it uses as much as digits as its factorization.

3131112111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447301730166.

The product of its digits is 54, while the sum is 20.

Adding to 3131112111113 its reverse (3111112111313), we get a palindrome (6242224222426).

The spelling of 3131112111113 in words is "three trillion, one hundred thirty-one billion, one hundred twelve million, one hundred eleven thousand, one hundred thirteen".