131166943 has 2 divisors, whose sum is σ = 131166944. Its totient is φ = 131166942.

The previous prime is 131166941. The next prime is 131166949. The reversal of 131166943 is 349661131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131166943 - 2¹ = 131166941 is a prime.

Together with 131166941, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 131166899 and 131166908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131166941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65583471 + 65583472.

It is an arithmetic number, because the mean of its divisors is an integer number (65583472).

Almost surely, 2^131166943 is an apocalyptic number.

131166943 is a deficient number, since it is larger than the sum of its proper divisors (1).

131166943 is an equidigital number, since it uses as much as digits as its factorization.

131166943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 131166943 is about 11452.8137590725. The cubic root of 131166943 is about 508.0909572701.

The spelling of 131166943 in words is "one hundred thirty-one million, one hundred sixty-six thousand, nine hundred forty-three".