123131317344742 has 8 divisors (see below), whose sum is σ = 211082258305296. Its totient is φ = 52770564576312.

The previous prime is 123131317344643. The next prime is 123131317344769. The reversal of 123131317344742 is 247443713131321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123131317344742² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123131317344692 and 123131317344701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4397547048013 + ... + 4397547048040.

It is an arithmetic number, because the mean of its divisors is an integer number (26385282288162).

Almost surely, 2^{123131317344742} is an apocalyptic number.

123131317344742 is a deficient number, since it is larger than the sum of its proper divisors (87950940960554).

123131317344742 is an equidigital number, since it uses as much as digits as its factorization.

123131317344742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8795094096062.

The product of its digits is 1016064, while the sum is 46.

The spelling of 123131317344742 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, three hundred seventeen million, three hundred forty-four thousand, seven hundred forty-two".