13123011091 has 2 divisors, whose sum is σ = 13123011092. Its totient is φ = 13123011090.

The previous prime is 13123011071. The next prime is 13123011101. The reversal of 13123011091 is 19011032131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13123011091 - 2²⁵ = 13089456659 is a prime.

It is not a weakly prime, because it can be changed into another prime (13123011071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561505545 + 6561505546.

It is an arithmetic number, because the mean of its divisors is an integer number (6561505546).

Almost surely, 2^13123011091 is an apocalyptic number.

13123011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123011091 is an equidigital number, since it uses as much as digits as its factorization.

13123011091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 13123011091 in words is "thirteen billion, one hundred twenty-three million, eleven thousand, ninety-one".