123531542502112 has 24 divisors (see below), whose sum is σ = 245475646964856. Its totient is φ = 61188521050752.

The previous prime is 123531542502107. The next prime is 123531542502133. The reversal of 123531542502112 is 211205245135321.

It is a happy number.

It is a super-2 number, since 2×123531542502112² (a number of 29 digits) contains 22 as substring.

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, 18039065283 + ... + 18039072130.

It is an arithmetic number, because the mean of its divisors is an integer number (10228151956869).

Almost surely, 2^{123531542502112} is an apocalyptic number.

It is an amenable number.

123531542502112 is a deficient number, since it is larger than the sum of its proper divisors (121944104462744).

123531542502112 is a wasteful number, since it uses less digits than its factorization.

123531542502112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36078137530 (or 36078137522 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 123531542502112 its reverse (211205245135321), we get a palindrome (334736787637433).

The spelling of 123531542502112 in words is "one hundred twenty-three trillion, five hundred thirty-one billion, five hundred forty-two million, five hundred two thousand, one hundred twelve".