131321303 has 2 divisors, whose sum is σ = 131321304. Its totient is φ = 131321302.

The previous prime is 131321297. The next prime is 131321317. The reversal of 131321303 is 303123131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131321303 - 2⁴ = 131321287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131321353) 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 as a sum of consecutive naturals, namely, 65660651 + 65660652.

It is an arithmetic number, because the mean of its divisors is an integer number (65660652).

Almost surely, 2^131321303 is an apocalyptic number.

131321303 is a deficient number, since it is larger than the sum of its proper divisors (1).

131321303 is an equidigital number, since it uses as much as digits as its factorization.

131321303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131321303 is about 11459.5507329040. The cubic root of 131321303 is about 508.2901898228.

Adding to 131321303 its reverse (303123131), we get a palindrome (434444434).

The spelling of 131321303 in words is "one hundred thirty-one million, three hundred twenty-one thousand, three hundred three".