123001002131291 has 2 divisors, whose sum is σ = 123001002131292. Its totient is φ = 123001002131290.

The previous prime is 123001002131279. The next prime is 123001002131341. The reversal of 123001002131291 is 192131200100321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123001002131291 - 2¹⁰ = 123001002130267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123001002131291.

It is not a weakly prime, because it can be changed into another prime (123001002131591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61500501065645 + 61500501065646.

It is an arithmetic number, because the mean of its divisors is an integer number (61500501065646).

Almost surely, 2^{123001002131291} is an apocalyptic number.

123001002131291 is a deficient number, since it is larger than the sum of its proper divisors (1).

123001002131291 is an equidigital number, since it uses as much as digits as its factorization.

123001002131291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 123001002131291 in words is "one hundred twenty-three trillion, one billion, two million, one hundred thirty-one thousand, two hundred ninety-one".