123243504431441 has 4 divisors (see below), whose sum is σ = 123253361558592. Its totient is φ = 123233647304292.

The previous prime is 123243504431417. The next prime is 123243504431477. The reversal of 123243504431441 is 144134405342321.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123243504431441 is a prime.

It is a super-2 number, since 2×123243504431441² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123243504431941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4928544821 + ... + 4928569826.

It is an arithmetic number, because the mean of its divisors is an integer number (30813340389648).

Almost surely, 2^{123243504431441} is an apocalyptic number.

It is an amenable number.

123243504431441 is a deficient number, since it is larger than the sum of its proper divisors (9857127151).

123243504431441 is an equidigital number, since it uses as much as digits as its factorization.

123243504431441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9857127150.

The product of its (nonzero) digits is 552960, while the sum is 41.

Adding to 123243504431441 its reverse (144134405342321), we get a palindrome (267377909773762).

The spelling of 123243504431441 in words is "one hundred twenty-three trillion, two hundred forty-three billion, five hundred four million, four hundred thirty-one thousand, four hundred forty-one".