123444312502423 has 32 divisors (see below), whose sum is σ = 139195895021568. Its totient is φ = 108498989894400.

The previous prime is 123444312502373. The next prime is 123444312502477. The reversal of 123444312502423 is 324205213444321.

It is a cyclic number.

It is not a de Polignac number, because 123444312502423 - 2¹³ = 123444312494231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123444312502123) 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 in 31 ways as a sum of consecutive naturals, for example, 49003186 + ... + 51460672.

It is an arithmetic number, because the mean of its divisors is an integer number (4349871719424).

Almost surely, 2^{123444312502423} is an apocalyptic number.

123444312502423 is a deficient number, since it is larger than the sum of its proper divisors (15751582519145).

123444312502423 is a wasteful number, since it uses less digits than its factorization.

123444312502423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458543.

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 123444312502423 its reverse (324205213444321), we get a palindrome (447649525946744).

The spelling of 123444312502423 in words is "one hundred twenty-three trillion, four hundred forty-four billion, three hundred twelve million, five hundred two thousand, four hundred twenty-three".