13203021320 has 32 divisors (see below), whose sum is σ = 29786474520. Its totient is φ = 5267043840.

The previous prime is 13203021317. The next prime is 13203021323. The reversal of 13203021320 is 2312030231.

It is an interprime number because it is at equal distance from previous prime (13203021317) and next prime (13203021323).

It can be written as a sum of positive squares in 4 ways, for example, as 9462231076 + 3740790244 = 97274^2 + 61162^2 .

It is not an unprimeable number, because it can be changed into a prime (13203021323) 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, 427541 + ... + 457380.

Almost surely, 2^13203021320 is an apocalyptic number.

13203021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13203021320 is an abundant number, since it is smaller than the sum of its proper divisors (16583453200).

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

13203021320 is a wasteful number, since it uses less digits than its factorization.

13203021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885305 (or 885301 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13203021320 its reverse (2312030231), we get a palindrome (15515051551).

The spelling of 13203021320 in words is "thirteen billion, two hundred three million, twenty-one thousand, three hundred twenty".