123133320013 has 4 divisors (see below), whose sum is σ = 134327258208. Its totient is φ = 111939381820.

The previous prime is 123133319993. The next prime is 123133320019. The reversal of 123133320013 is 310023331321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310023331321 = 11 ⋅28183939211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123133320013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123133320019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5596969081 + ... + 5596969102.

It is an arithmetic number, because the mean of its divisors is an integer number (33581814552).

Almost surely, 2^123133320013 is an apocalyptic number.

It is an amenable number.

123133320013 is a deficient number, since it is larger than the sum of its proper divisors (11193938195).

123133320013 is a wasteful number, since it uses less digits than its factorization.

123133320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11193938194.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 123133320013 its reverse (310023331321), we get a palindrome (433156651334).

The spelling of 123133320013 in words is "one hundred twenty-three billion, one hundred thirty-three million, three hundred twenty thousand, thirteen".