123113134423 has 16 divisors (see below), whose sum is σ = 129021742080. Its totient is φ = 117326721600.

The previous prime is 123113134399. The next prime is 123113134477. The reversal of 123113134423 is 324431311321.

It is a cyclic number.

It is not a de Polignac number, because 123113134423 - 2²¹ = 123111037271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123113134391 and 123113134400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133113134423) 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, 8489763 + ... + 8504251.

It is an arithmetic number, because the mean of its divisors is an integer number (8063858880).

Almost surely, 2^123113134423 is an apocalyptic number.

123113134423 is a deficient number, since it is larger than the sum of its proper divisors (5908607657).

123113134423 is a wasteful number, since it uses less digits than its factorization.

123113134423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18678.

The product of its digits is 5184, while the sum is 28.

Adding to 123113134423 its reverse (324431311321), we get a palindrome (447544445744).

The spelling of 123113134423 in words is "one hundred twenty-three billion, one hundred thirteen million, one hundred thirty-four thousand, four hundred twenty-three".