1123231320091 has 2 divisors, whose sum is σ = 1123231320092. Its totient is φ = 1123231320090.

The previous prime is 1123231320083. The next prime is 1123231320103. The reversal of 1123231320091 is 1900231323211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123231320091 - 2³ = 1123231320083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123231320031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561615660045 + 561615660046.

It is an arithmetic number, because the mean of its divisors is an integer number (561615660046).

Almost surely, 2^{1123231320091} is an apocalyptic number.

1123231320091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123231320091 is an equidigital number, since it uses as much as digits as its factorization.

1123231320091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 1123231320091 in words is "one trillion, one hundred twenty-three billion, two hundred thirty-one million, three hundred twenty thousand, ninety-one".