123243431035229 has 2 divisors, whose sum is σ = 123243431035230. Its totient is φ = 123243431035228.

The previous prime is 123243431035171. The next prime is 123243431035237. The reversal of 123243431035229 is 922530134342321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73218860467204 + 50024570568025 = 8556802^2 + 7072805^2 .

It is a cyclic number.

It is not a de Polignac number, because 123243431035229 - 2³² = 123239136067933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123243431035229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123243431032229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621715517614 + 61621715517615.

It is an arithmetic number, because the mean of its divisors is an integer number (61621715517615).

Almost surely, 2^{123243431035229} is an apocalyptic number.

It is an amenable number.

123243431035229 is a deficient number, since it is larger than the sum of its proper divisors (1).

123243431035229 is an equidigital number, since it uses as much as digits as its factorization.

123243431035229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 123243431035229 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred thirty-one million, thirty-five thousand, two hundred twenty-nine".