123011332010320 has 40 divisors (see below), whose sum is σ = 308001450536136. Its totient is φ = 45419568741888.

The previous prime is 123011332010269. The next prime is 123011332010321. The reversal of 123011332010320 is 23010233110321.

It can be written as a sum of positive squares in 4 ways, for example, as 4887300604176 + 118124031406144 = 2210724^2 + 10868488^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 123011332010291 and 123011332010300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011332010321) 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, 59140062427 + ... + 59140064506.

Almost surely, 2^{123011332010320} is an apocalyptic number.

123011332010320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123011332010320 is an abundant number, since it is smaller than the sum of its proper divisors (184990118525816).

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

123011332010320 is a wasteful number, since it uses less digits than its factorization.

123011332010320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118280126959 (or 118280126953 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123011332010320 its reverse (23010233110321), we get a palindrome (146021565120641).

The spelling of 123011332010320 in words is "one hundred twenty-three trillion, eleven billion, three hundred thirty-two million, ten thousand, three hundred twenty".