131201221313 has 4 divisors (see below), whose sum is σ = 131214453168. Its totient is φ = 131187989460.

The previous prime is 131201221297. The next prime is 131201221357. The reversal of 131201221313 is 313122102131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131201221313 - 2⁴ = 131201221297 is a prime.

It is a super-3 number, since 3×131201221313³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131201221813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6601043 + ... + 6620888.

It is an arithmetic number, because the mean of its divisors is an integer number (32803613292).

Almost surely, 2^131201221313 is an apocalyptic number.

It is an amenable number.

131201221313 is a deficient number, since it is larger than the sum of its proper divisors (13231855).

131201221313 is an equidigital number, since it uses as much as digits as its factorization.

131201221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231854.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131201221313 its reverse (313122102131), we get a palindrome (444323323444).

The spelling of 131201221313 in words is "one hundred thirty-one billion, two hundred one million, two hundred twenty-one thousand, three hundred thirteen".