123531545220323 has 2 divisors, whose sum is σ = 123531545220324. Its totient is φ = 123531545220322.

The previous prime is 123531545220319. The next prime is 123531545220331. The reversal of 123531545220323 is 323022545135321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123531545220323 - 2² = 123531545220319 is a prime.

It is a super-2 number, since 2×123531545220323² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123531541220323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61765772610161 + 61765772610162.

It is an arithmetic number, because the mean of its divisors is an integer number (61765772610162).

Almost surely, 2^{123531545220323} is an apocalyptic number.

123531545220323 is a deficient number, since it is larger than the sum of its proper divisors (1).

123531545220323 is an equidigital number, since it uses as much as digits as its factorization.

123531545220323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 41.

The spelling of 123531545220323 in words is "one hundred twenty-three trillion, five hundred thirty-one billion, five hundred forty-five million, two hundred twenty thousand, three hundred twenty-three".