13211040320 has 28 divisors (see below), whose sum is σ = 31458790524. Its totient is φ = 5284416000.

The previous prime is 13211040319. The next prime is 13211040341. The reversal of 13211040320 is 2304011231.

It can be written as a sum of positive squares in 2 ways, for example, as 4444088896 + 8766951424 = 66664^2 + 93632^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20641931 + ... + 20642570.

It is an arithmetic number, because the mean of its divisors is an integer number (1123528233).

Almost surely, 2^13211040320 is an apocalyptic number.

13211040320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13211040320 is an abundant number, since it is smaller than the sum of its proper divisors (18247750204).

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

13211040320 is an equidigital number, since it uses as much as digits as its factorization.

13211040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41284518 (or 41284508 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13211040320 its reverse (2304011231), we get a palindrome (15515051551).

The spelling of 13211040320 in words is "thirteen billion, two hundred eleven million, forty thousand, three hundred twenty".