123123230223331 has 4 divisors (see below), whose sum is σ = 132594247932832. Its totient is φ = 113652212513832.

The previous prime is 123123230223313. The next prime is 123123230223347. The reversal of 123123230223331 is 133322032321321.

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

It is a cyclic number.

It is not a de Polignac number, because 123123230223331 - 2¹¹ = 123123230221283 is a prime.

It is a super-2 number, since 2×123123230223331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123123230223293 and 123123230223302.

It is not an unprimeable number, because it can be changed into a prime (123123230923331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4735508854731 + ... + 4735508854756.

It is an arithmetic number, because the mean of its divisors is an integer number (33148561983208).

Almost surely, 2^{123123230223331} is an apocalyptic number.

123123230223331 is a deficient number, since it is larger than the sum of its proper divisors (9471017709501).

123123230223331 is an equidigital number, since it uses as much as digits as its factorization.

123123230223331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9471017709500.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 123123230223331 its reverse (133322032321321), we get a palindrome (256445262544652).

The spelling of 123123230223331 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, two hundred thirty million, two hundred twenty-three thousand, three hundred thirty-one".