131443307 has 2 divisors, whose sum is σ = 131443308. Its totient is φ = 131443306.

The previous prime is 131443271. The next prime is 131443373. The reversal of 131443307 is 703344131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131443307 - 2²⁰ = 130394731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131443397) 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, 65721653 + 65721654.

It is an arithmetic number, because the mean of its divisors is an integer number (65721654).

Almost surely, 2^131443307 is an apocalyptic number.

131443307 is a deficient number, since it is larger than the sum of its proper divisors (1).

131443307 is an equidigital number, since it uses as much as digits as its factorization.

131443307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 131443307 is about 11464.8727424250. The cubic root of 131443307 is about 508.4475500284.

Adding to 131443307 its reverse (703344131), we get a palindrome (834787438).

The spelling of 131443307 in words is "one hundred thirty-one million, four hundred forty-three thousand, three hundred seven".