13201020320 has 48 divisors (see below), whose sum is σ = 31298504328. Its totient is φ = 5261598720.

The previous prime is 13201020307. The next prime is 13201020341. The reversal of 13201020320 is 2302010231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11587230736 + 1613789584 = 107644^2 + 40172^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13201020295 and 13201020304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101849 + ... + 191768.

Almost surely, 2^13201020320 is an apocalyptic number.

13201020320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13201020320 is an abundant number, since it is smaller than the sum of its proper divisors (18097484008).

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

13201020320 is a wasteful number, since it uses less digits than its factorization.

13201020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293913 (or 293905 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 13201020320 its reverse (2302010231), we get a palindrome (15503030551).

The spelling of 13201020320 in words is "thirteen billion, two hundred one million, twenty thousand, three hundred twenty".