3131113212211 has 4 divisors (see below), whose sum is σ = 3131120801800. Its totient is φ = 3131105622624.

The previous prime is 3131113212191. The next prime is 3131113212221. The reversal of 3131113212211 is 1122123111313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3131113212211 - 2²⁵ = 3131079657779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131113212221) 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 in 3 ways as a sum of consecutive naturals, for example, 3138081 + ... + 4013698.

It is an arithmetic number, because the mean of its divisors is an integer number (782780200450).

Almost surely, 2^{3131113212211} is an apocalyptic number.

3131113212211 is a deficient number, since it is larger than the sum of its proper divisors (7589589).

3131113212211 is an equidigital number, since it uses as much as digits as its factorization.

3131113212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7589588.

The product of its digits is 216, while the sum is 22.

Adding to 3131113212211 its reverse (1122123111313), we get a palindrome (4253236323524).

The spelling of 3131113212211 in words is "three trillion, one hundred thirty-one billion, one hundred thirteen million, two hundred twelve thousand, two hundred eleven".