13202312320 has 32 divisors (see below), whose sum is σ = 31561779420. Its totient is φ = 5280924672.

The previous prime is 13202312309. The next prime is 13202312329. The reversal of 13202312320 is 2321320231.

It can be written as a sum of positive squares in 2 ways, for example, as 11476408384 + 1725903936 = 107128^2 + 41544^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (13202312329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10313667 + ... + 10314946.

Almost surely, 2^13202312320 is an apocalyptic number.

13202312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13202312320 is an abundant number, since it is smaller than the sum of its proper divisors (18359467100).

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

13202312320 is an equidigital number, since it uses as much as digits as its factorization.

13202312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20628632 (or 20628620 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13202312320 its reverse (2321320231), we get a palindrome (15523632551).

The spelling of 13202312320 in words is "thirteen billion, two hundred two million, three hundred twelve thousand, three hundred twenty".