13123231202320 has 40 divisors (see below), whose sum is σ = 30517686135936. Its totient is φ = 5248230357888.

The previous prime is 13123231202297. The next prime is 13123231202321. The reversal of 13123231202320 is 2320213232131.

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

It is not an unprimeable number, because it can be changed into a prime (13123231202321) 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, 16197762 + ... + 16988641.

Almost surely, 2^{13123231202320} is an apocalyptic number.

13123231202320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123231202320 is an abundant number, since it is smaller than the sum of its proper divisors (17394454933616).

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

13123231202320 is a wasteful number, since it uses less digits than its factorization.

13123231202320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33191359 (or 33191353 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 13123231202320 its reverse (2320213232131), we get a palindrome (15443444434451).

The spelling of 13123231202320 in words is "thirteen trillion, one hundred twenty-three billion, two hundred thirty-one million, two hundred two thousand, three hundred twenty".