123236424632309 has 2 divisors, whose sum is σ = 123236424632310. Its totient is φ = 123236424632308.

The previous prime is 123236424632297. The next prime is 123236424632407. The reversal of 123236424632309 is 903236424632321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107501541207025 + 15734883425284 = 10368295^2 + 3966722^2 .

It is a cyclic number.

It is not a de Polignac number, because 123236424632309 - 2⁸ = 123236424632053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123236424602309) 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, 61618212316154 + 61618212316155.

It is an arithmetic number, because the mean of its divisors is an integer number (61618212316155).

Almost surely, 2^{123236424632309} is an apocalyptic number.

It is an amenable number.

123236424632309 is a deficient number, since it is larger than the sum of its proper divisors (1).

123236424632309 is an equidigital number, since it uses as much as digits as its factorization.

123236424632309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 50.

The spelling of 123236424632309 in words is "one hundred twenty-three trillion, two hundred thirty-six billion, four hundred twenty-four million, six hundred thirty-two thousand, three hundred nine".