131966347 has 2 divisors, whose sum is σ = 131966348. Its totient is φ = 131966346.

The previous prime is 131966279. The next prime is 131966353. The reversal of 131966347 is 743669131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131966347 - 2¹⁵ = 131933579 is a prime.

It is not a weakly prime, because it can be changed into another prime (131966377) 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, 65983173 + 65983174.

It is an arithmetic number, because the mean of its divisors is an integer number (65983174).

Almost surely, 2^131966347 is an apocalyptic number.

131966347 is a deficient number, since it is larger than the sum of its proper divisors (1).

131966347 is an equidigital number, since it uses as much as digits as its factorization.

131966347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 131966347 is about 11487.6606408790. The cubic root of 131966347 is about 509.1210633200.

The spelling of 131966347 in words is "one hundred thirty-one million, nine hundred sixty-six thousand, three hundred forty-seven".