123531515121352 has 32 divisors (see below), whose sum is σ = 249972766243200. Its totient is φ = 56892458597184.

The previous prime is 123531515121263. The next prime is 123531515121379. The reversal of 123531515121352 is 253121515135321.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1271689152 + ... + 1271786287.

It is an arithmetic number, because the mean of its divisors is an integer number (7811648945100).

Almost surely, 2^{123531515121352} is an apocalyptic number.

It is an amenable number.

123531515121352 is an abundant number, since it is smaller than the sum of its proper divisors (126441251121848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123531515121352 is a wasteful number, since it uses less digits than its factorization.

123531515121352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543475925 (or 2543475921 counting only the distinct ones).

The product of its digits is 135000, while the sum is 40.

The spelling of 123531515121352 in words is "one hundred twenty-three trillion, five hundred thirty-one billion, five hundred fifteen million, one hundred twenty-one thousand, three hundred fifty-two".