1323120403423 has 16 divisors (see below), whose sum is σ = 1649069255680. Its totient is φ = 1033613040096.

The previous prime is 1323120403421. The next prime is 1323120403489. The reversal of 1323120403423 is 3243040213231.

It is a happy number.

It is not a de Polignac number, because 1323120403423 - 2¹ = 1323120403421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1323120403391 and 1323120403400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323120403421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92016765 + ... + 92031142.

It is an arithmetic number, because the mean of its divisors is an integer number (103066828480).

Almost surely, 2^{1323120403423} is an apocalyptic number.

1323120403423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1323120403423 is a deficient number, since it is larger than the sum of its proper divisors (325948852257).

1323120403423 is a wasteful number, since it uses less digits than its factorization.

1323120403423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184048006.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1323120403423 its reverse (3243040213231), we get a palindrome (4566160616654).

The spelling of 1323120403423 in words is "one trillion, three hundred twenty-three billion, one hundred twenty million, four hundred three thousand, four hundred twenty-three".