123320404040203 has 4 divisors (see below), whose sum is σ = 123320614335088. Its totient is φ = 123320193745320.

The previous prime is 123320404040179. The next prime is 123320404040209. The reversal of 123320404040203 is 302040404023321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123320404040203 is a prime.

It is a super-3 number, since 3×123320404040203³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123320404040209) 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, 104265351 + ... + 105441472.

It is an arithmetic number, because the mean of its divisors is an integer number (30830153583772).

Almost surely, 2^{123320404040203} is an apocalyptic number.

123320404040203 is a deficient number, since it is larger than the sum of its proper divisors (210294885).

123320404040203 is an equidigital number, since it uses as much as digits as its factorization.

123320404040203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210294884.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 123320404040203 its reverse (302040404023321), we get a palindrome (425360808063524).

The spelling of 123320404040203 in words is "one hundred twenty-three trillion, three hundred twenty billion, four hundred four million, forty thousand, two hundred three".