131215303 has 2 divisors, whose sum is σ = 131215304. Its totient is φ = 131215302.

The previous prime is 131215267. The next prime is 131215309. The reversal of 131215303 is 303512131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131215303 - 2¹⁷ = 131084231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131215309) 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 as a sum of consecutive naturals, namely, 65607651 + 65607652.

It is an arithmetic number, because the mean of its divisors is an integer number (65607652).

Almost surely, 2^131215303 is an apocalyptic number.

131215303 is a deficient number, since it is larger than the sum of its proper divisors (1).

131215303 is an equidigital number, since it uses as much as digits as its factorization.

131215303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 131215303 is about 11454.9248360694. The cubic root of 131215303 is about 508.1533923599.

Adding to 131215303 its reverse (303512131), we get a palindrome (434727434).

The spelling of 131215303 in words is "one hundred thirty-one million, two hundred fifteen thousand, three hundred three".