131421313 has 2 divisors, whose sum is σ = 131421314. Its totient is φ = 131421312.

The previous prime is 131421293. The next prime is 131421317. The reversal of 131421313 is 313124131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106750224 + 24671089 = 10332^2 + 4967^2 .

It is an emirp because it is prime and its reverse (313124131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131421313 - 2⁵ = 131421281 is a prime.

It is not a weakly prime, because it can be changed into another prime (131421317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65710656 + 65710657.

It is an arithmetic number, because the mean of its divisors is an integer number (65710657).

Almost surely, 2^131421313 is an apocalyptic number.

It is an amenable number.

131421313 is a deficient number, since it is larger than the sum of its proper divisors (1).

131421313 is an equidigital number, since it uses as much as digits as its factorization.

131421313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 131421313 is about 11463.9135115370. The cubic root of 131421313 is about 508.4191894638.

Adding to 131421313 its reverse (313124131), we get a palindrome (444545444).

The spelling of 131421313 in words is "one hundred thirty-one million, four hundred twenty-one thousand, three hundred thirteen".