123531311064142 has 8 divisors (see below), whose sum is σ = 185739202794600. Its totient is φ = 61618243465944.

The previous prime is 123531311064097. The next prime is 123531311064149. The reversal of 123531311064142 is 241460113135321.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123531311064149) 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, 73706032017 + ... + 73706033692.

It is an arithmetic number, because the mean of its divisors is an integer number (23217400349325).

Almost surely, 2^{123531311064142} is an apocalyptic number.

123531311064142 is a deficient number, since it is larger than the sum of its proper divisors (62207891730458).

123531311064142 is a wasteful number, since it uses less digits than its factorization.

123531311064142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147412066130.

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 123531311064142 its reverse (241460113135321), we get a palindrome (364991424199463).

The spelling of 123531311064142 in words is "one hundred twenty-three trillion, five hundred thirty-one billion, three hundred eleven million, sixty-four thousand, one hundred forty-two".