131221314430307 has 2 divisors, whose sum is σ = 131221314430308. Its totient is φ = 131221314430306.

The previous prime is 131221314430207. The next prime is 131221314430321. The reversal of 131221314430307 is 703034413122131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (703034413122131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131221314430307 - 2²⁰ = 131221313381731 is a prime.

It is a super-3 number, since 3×131221314430307³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (131221314430357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65610657215153 + 65610657215154.

It is an arithmetic number, because the mean of its divisors is an integer number (65610657215154).

Almost surely, 2^{131221314430307} is an apocalyptic number.

131221314430307 is a deficient number, since it is larger than the sum of its proper divisors (1).

131221314430307 is an equidigital number, since it uses as much as digits as its factorization.

131221314430307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

Adding to 131221314430307 its reverse (703034413122131), we get a palindrome (834255727552438).

The spelling of 131221314430307 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred fourteen million, four hundred thirty thousand, three hundred seven".