123431033211001 has 2 divisors, whose sum is σ = 123431033211002. Its totient is φ = 123431033211000.

The previous prime is 123431033210983. The next prime is 123431033211007. The reversal of 123431033211001 is 100112330134321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68643279695376 + 54787753515625 = 8285124^2 + 7401875^2 .

It is a cyclic number.

It is not a de Polignac number, because 123431033211001 - 2²⁹ = 123430496340089 is a prime.

It is not a weakly prime, because it can be changed into another prime (123431033211007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61715516605500 + 61715516605501.

It is an arithmetic number, because the mean of its divisors is an integer number (61715516605501).

Almost surely, 2^{123431033211001} is an apocalyptic number.

It is an amenable number.

123431033211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

123431033211001 is an equidigital number, since it uses as much as digits as its factorization.

123431033211001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 123431033211001 its reverse (100112330134321), we get a palindrome (223543363345322).

The spelling of 123431033211001 in words is "one hundred twenty-three trillion, four hundred thirty-one billion, thirty-three million, two hundred eleven thousand, one".