123431434055023 has 2 divisors, whose sum is σ = 123431434055024. Its totient is φ = 123431434055022.

The previous prime is 123431434055011. The next prime is 123431434055101. The reversal of 123431434055023 is 320550434134321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123431434055023 - 2¹⁷ = 123431433923951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123431434055123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61715717027511 + 61715717027512.

It is an arithmetic number, because the mean of its divisors is an integer number (61715717027512).

Almost surely, 2^{123431434055023} is an apocalyptic number.

123431434055023 is a deficient number, since it is larger than the sum of its proper divisors (1).

123431434055023 is an equidigital number, since it uses as much as digits as its factorization.

123431434055023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 123431434055023 its reverse (320550434134321), we get a palindrome (443981868189344).

The spelling of 123431434055023 in words is "one hundred twenty-three trillion, four hundred thirty-one billion, four hundred thirty-four million, fifty-five thousand, twenty-three".