123133131233 has 4 divisors (see below), whose sum is σ = 140723578560. Its totient is φ = 105542683908.

The previous prime is 123133131217. The next prime is 123133131241. The reversal of 123133131233 is 332131331321.

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: 332131331321 = 647 ⋅513340543.

It is a cyclic number.

It is not a de Polignac number, because 123133131233 - 2⁴ = 123133131217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123133131263) 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, 8795223653 + ... + 8795223666.

It is an arithmetic number, because the mean of its divisors is an integer number (35180894640).

Almost surely, 2^123133131233 is an apocalyptic number.

It is an amenable number.

123133131233 is a deficient number, since it is larger than the sum of its proper divisors (17590447327).

123133131233 is an equidigital number, since it uses as much as digits as its factorization.

123133131233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17590447326.

The product of its digits is 2916, while the sum is 26.

Adding to 123133131233 its reverse (332131331321), we get a palindrome (455264462554).

The spelling of 123133131233 in words is "one hundred twenty-three billion, one hundred thirty-three million, one hundred thirty-one thousand, two hundred thirty-three".