2131113223091 has 2 divisors, whose sum is σ = 2131113223092. Its totient is φ = 2131113223090.

The previous prime is 2131113223073. The next prime is 2131113223153. The reversal of 2131113223091 is 1903223111312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131113223091 - 2²⁶ = 2131046114227 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131113225091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065556611545 + 1065556611546.

It is an arithmetic number, because the mean of its divisors is an integer number (1065556611546).

Almost surely, 2^{2131113223091} is an apocalyptic number.

2131113223091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131113223091 is an equidigital number, since it uses as much as digits as its factorization.

2131113223091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 2131113223091 in words is "two trillion, one hundred thirty-one billion, one hundred thirteen million, two hundred twenty-three thousand, ninety-one".