123031251505552 has 80 divisors (see below), whose sum is σ = 270335616093760. Its totient is φ = 53772116322816.

The previous prime is 123031251505549. The next prime is 123031251505559. The reversal of 123031251505552 is 255505152130321.

It is not an unprimeable number, because it can be changed into a prime (123031251505559) 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 15 ways as a sum of consecutive naturals, for example, 2643178 + ... + 15907510.

It is an arithmetic number, because the mean of its divisors is an integer number (3379195201172).

Almost surely, 2^{123031251505552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123031251505552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135167808046880).

123031251505552 is an abundant number, since it is smaller than the sum of its proper divisors (147304364588208).

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

123031251505552 is a wasteful number, since it uses less digits than its factorization.

123031251505552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13266720 (or 13266714 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 123031251505552 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred fifty-one million, five hundred five thousand, five hundred fifty-two".