123243431145251 has 2 divisors, whose sum is σ = 123243431145252. Its totient is φ = 123243431145250.

The previous prime is 123243431145203. The next prime is 123243431145299. The reversal of 123243431145251 is 152541134342321.

It is a balanced prime because it is at equal distance from previous prime (123243431145203) and next prime (123243431145299).

It is a cyclic number.

It is not a de Polignac number, because 123243431145251 - 2¹⁸ = 123243430883107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123243431145199 and 123243431145208.

It is not a weakly prime, because it can be changed into another prime (123243431115251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621715572625 + 61621715572626.

It is an arithmetic number, because the mean of its divisors is an integer number (61621715572626).

Almost surely, 2^{123243431145251} is an apocalyptic number.

123243431145251 is a deficient number, since it is larger than the sum of its proper divisors (1).

123243431145251 is an equidigital number, since it uses as much as digits as its factorization.

123243431145251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 41.

Adding to 123243431145251 its reverse (152541134342321), we get a palindrome (275784565487572).

The spelling of 123243431145251 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred thirty-one million, one hundred forty-five thousand, two hundred fifty-one".