131197163 has 4 divisors (see below), whose sum is σ = 133988640. Its totient is φ = 128405688.

The previous prime is 131197159. The next prime is 131197193. The reversal of 131197163 is 361791131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131197163 - 2² = 131197159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131197103) 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 in 3 ways as a sum of consecutive naturals, for example, 1395668 + ... + 1395761.

It is an arithmetic number, because the mean of its divisors is an integer number (33497160).

Almost surely, 2^131197163 is an apocalyptic number.

131197163 is a deficient number, since it is larger than the sum of its proper divisors (2791477).

131197163 is an equidigital number, since it uses as much as digits as its factorization.

131197163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791476.

The product of its digits is 3402, while the sum is 32.

The square root of 131197163 is about 11454.1330095298. The cubic root of 131197163 is about 508.1299745442.

The spelling of 131197163 in words is "one hundred thirty-one million, one hundred ninety-seven thousand, one hundred sixty-three".