13131220000 has 60 divisors (see below), whose sum is σ = 32304820086. Its totient is φ = 5252480000.

The previous prime is 13131219967. The next prime is 13131220027. The reversal of 13131220000 is 2213131.

It can be written as a sum of positive squares in 5 ways, for example, as 283450896 + 12847769104 = 16836^2 + 113348^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 308281 + ... + 348280.

Almost surely, 2^13131220000 is an apocalyptic number.

13131220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131220000 is an abundant number, since it is smaller than the sum of its proper divisors (19173600086).

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

13131220000 is an frugal number, since it uses more digits than its factorization.

13131220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656591 (or 656568 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13131220000 its reverse (2213131), we get a palindrome (13133433131).

The spelling of 13131220000 in words is "thirteen billion, one hundred thirty-one million, two hundred twenty thousand".