123021321244231 has 4 divisors (see below), whose sum is σ = 123025604297752. Its totient is φ = 123017038190712.

The previous prime is 123021321244229. The next prime is 123021321244291. The reversal of 123021321244231 is 132442123120321.

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 123021321244231 - 2¹ = 123021321244229 is a prime.

It is a super-2 number, since 2×123021321244231² (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 = 123021321244193 and 123021321244202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123021321244291) 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, 2141483676 + ... + 2141541121.

It is an arithmetic number, because the mean of its divisors is an integer number (30756401074438).

Almost surely, 2^{123021321244231} is an apocalyptic number.

123021321244231 is a deficient number, since it is larger than the sum of its proper divisors (4283053521).

123021321244231 is an equidigital number, since it uses as much as digits as its factorization.

123021321244231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283053520.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 123021321244231 its reverse (132442123120321), we get a palindrome (255463444364552).

The spelling of 123021321244231 in words is "one hundred twenty-three trillion, twenty-one billion, three hundred twenty-one million, two hundred forty-four thousand, two hundred thirty-one".