123013133423 has 16 divisors (see below), whose sum is σ = 128018983680. Its totient is φ = 118059841536.

The previous prime is 123013133387. The next prime is 123013133431. The reversal of 123013133423 is 324331310321.

It is a cyclic number.

It is not a de Polignac number, because 123013133423 - 2¹⁸ = 123012871279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123013133392 and 123013133401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013133473) 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, 4364111 + ... + 4392207.

It is an arithmetic number, because the mean of its divisors is an integer number (8001186480).

Almost surely, 2^123013133423 is an apocalyptic number.

123013133423 is a deficient number, since it is larger than the sum of its proper divisors (5005850257).

123013133423 is a wasteful number, since it uses less digits than its factorization.

123013133423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29026.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 123013133423 its reverse (324331310321), we get a palindrome (447344443744).

The spelling of 123013133423 in words is "one hundred twenty-three billion, thirteen million, one hundred thirty-three thousand, four hundred twenty-three".