13203221303131 has 4 divisors (see below), whose sum is σ = 13419667554064. Its totient is φ = 12986775052200.

The previous prime is 13203221303123. The next prime is 13203221303147. The reversal of 13203221303131 is 13130312230231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13203221303131 - 2³ = 13203221303123 is a prime.

It is a super-2 number, since 2×13203221303131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13203221303096 and 13203221303105.

It is not an unprimeable number, because it can be changed into a prime (13203221303161) 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, 108223125375 + ... + 108223125496.

It is an arithmetic number, because the mean of its divisors is an integer number (3354916888516).

Almost surely, 2^{13203221303131} is an apocalyptic number.

13203221303131 is a deficient number, since it is larger than the sum of its proper divisors (216446250933).

13203221303131 is an equidigital number, since it uses as much as digits as its factorization.

13203221303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216446250932.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 13203221303131 its reverse (13130312230231), we get a palindrome (26333533533362).

The spelling of 13203221303131 in words is "thirteen trillion, two hundred three billion, two hundred twenty-one million, three hundred three thousand, one hundred thirty-one".