123255442334231 has 4 divisors (see below), whose sum is σ = 124040508846072. Its totient is φ = 122470375822392.

The previous prime is 123255442334209. The next prime is 123255442334249. The reversal of 123255442334231 is 132433244552321.

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 123255442334231 - 2²² = 123255438139927 is a prime.

It is a super-2 number, since 2×123255442334231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123255442334251) 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, 392533255685 + ... + 392533255998.

It is an arithmetic number, because the mean of its divisors is an integer number (31010127211518).

Almost surely, 2^{123255442334231} is an apocalyptic number.

123255442334231 is a deficient number, since it is larger than the sum of its proper divisors (785066511841).

123255442334231 is an equidigital number, since it uses as much as digits as its factorization.

123255442334231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785066511840.

The product of its digits is 2073600, while the sum is 44.

Adding to 123255442334231 its reverse (132433244552321), we get a palindrome (255688686886552).

The spelling of 123255442334231 in words is "one hundred twenty-three trillion, two hundred fifty-five billion, four hundred forty-two million, three hundred thirty-four thousand, two hundred thirty-one".