123142031099 has 2 divisors, whose sum is σ = 123142031100. Its totient is φ = 123142031098.

The previous prime is 123142031087. The next prime is 123142031137. The reversal of 123142031099 is 990130241321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123142031099 - 2²⁴ = 123125253883 is a prime.

It is not a weakly prime, because it can be changed into another prime (123142031069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61571015549 + 61571015550.

It is an arithmetic number, because the mean of its divisors is an integer number (61571015550).

Almost surely, 2^123142031099 is an apocalyptic number.

123142031099 is a deficient number, since it is larger than the sum of its proper divisors (1).

123142031099 is an equidigital number, since it uses as much as digits as its factorization.

123142031099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 123142031099 in words is "one hundred twenty-three billion, one hundred forty-two million, thirty-one thousand, ninety-nine".