123032321231 has 4 divisors (see below), whose sum is σ = 123669794592. Its totient is φ = 122394847872.

The previous prime is 123032321221. The next prime is 123032321233. The reversal of 123032321231 is 132123230321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132123230321 = 421 ⋅313831901.

It is a cyclic number.

It is not a de Polignac number, because 123032321231 - 2²⁶ = 122965212367 is a prime.

It is a super-2 number, since 2×123032321231² (a number of 23 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 = 123032321197 and 123032321206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123032321233) 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, 318736391 + ... + 318736776.

It is an arithmetic number, because the mean of its divisors is an integer number (30917448648).

Almost surely, 2^123032321231 is an apocalyptic number.

123032321231 is a deficient number, since it is larger than the sum of its proper divisors (637473361).

123032321231 is an equidigital number, since it uses as much as digits as its factorization.

123032321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637473360.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123032321231 its reverse (132123230321), we get a palindrome (255155551552).

The spelling of 123032321231 in words is "one hundred twenty-three billion, thirty-two million, three hundred twenty-one thousand, two hundred thirty-one".