123444031255530 has 32 divisors (see below), whose sum is σ = 296266814391744. Its totient is φ = 32918281737216.

The previous prime is 123444031255511. The next prime is 123444031255613. The reversal of 123444031255530 is 35552130444321.

123444031255530 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153162 + ... + 15713418.

It is an arithmetic number, because the mean of its divisors is an integer number (9258337949742).

Almost surely, 2^{123444031255530} is an apocalyptic number.

123444031255530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123444031255530 is an abundant number, since it is smaller than the sum of its proper divisors (172822783136214).

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

123444031255530 is a wasteful number, since it uses less digits than its factorization.

123444031255530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15824710.

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 123444031255530 its reverse (35552130444321), we get a palindrome (158996161699851).

The spelling of 123444031255530 in words is "one hundred twenty-three trillion, four hundred forty-four billion, thirty-one million, two hundred fifty-five thousand, five hundred thirty".