123243351311123 has 2 divisors, whose sum is σ = 123243351311124. Its totient is φ = 123243351311122.

The previous prime is 123243351311063. The next prime is 123243351311141. The reversal of 123243351311123 is 321113153342321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123243351311123 - 2³² = 123239056343827 is a prime.

It is a super-2 number, since 2×123243351311123² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123243351311173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621675655561 + 61621675655562.

It is an arithmetic number, because the mean of its divisors is an integer number (61621675655562).

Almost surely, 2^{123243351311123} is an apocalyptic number.

123243351311123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123243351311123 is an equidigital number, since it uses as much as digits as its factorization.

123243351311123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 35.

The spelling of 123243351311123 in words is "one hundred twenty-three trillion, two hundred forty-three billion, three hundred fifty-one million, three hundred eleven thousand, one hundred twenty-three".