123511152231420 has 24 divisors (see below), whose sum is σ = 345831226248144. Its totient is φ = 32936307261696.

The previous prime is 123511152231419. The next prime is 123511152231427. The reversal of 123511152231420 is 24132251115321.

123511152231420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123511152231427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029259601869 + ... + 1029259601988.

It is an arithmetic number, because the mean of its divisors is an integer number (14409634427006).

Almost surely, 2^{123511152231420} is an apocalyptic number.

123511152231420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123511152231420 is an abundant number, since it is smaller than the sum of its proper divisors (222320074016724).

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

123511152231420 is a wasteful number, since it uses less digits than its factorization.

123511152231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058519203869 (or 2058519203867 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 123511152231420 in words is "one hundred twenty-three trillion, five hundred eleven billion, one hundred fifty-two million, two hundred thirty-one thousand, four hundred twenty".