13220304131 has 4 divisors (see below), whose sum is σ = 13220555952. Its totient is φ = 13220052312.

The previous prime is 13220304121. The next prime is 13220304137. The reversal of 13220304131 is 13140302231.

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 13220304131 - 2¹⁸ = 13220041987 is a prime.

It is a super-2 number, since 2×13220304131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220304137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14015 + ... + 163208.

It is an arithmetic number, because the mean of its divisors is an integer number (3305138988).

Almost surely, 2^13220304131 is an apocalyptic number.

13220304131 is a deficient number, since it is larger than the sum of its proper divisors (251821).

13220304131 is an equidigital number, since it uses as much as digits as its factorization.

13220304131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251820.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13220304131 its reverse (13140302231), we get a palindrome (26360606362).

The spelling of 13220304131 in words is "thirteen billion, two hundred twenty million, three hundred four thousand, one hundred thirty-one".