131323163 has 4 divisors (see below), whose sum is σ = 131518968. Its totient is φ = 131127360.

The previous prime is 131323151. The next prime is 131323189. The reversal of 131323163 is 361323131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131323163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131323103) 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, 96893 + ... + 98238.

It is an arithmetic number, because the mean of its divisors is an integer number (32879742).

Almost surely, 2^131323163 is an apocalyptic number.

131323163 is a deficient number, since it is larger than the sum of its proper divisors (195805).

131323163 is an equidigital number, since it uses as much as digits as its factorization.

131323163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195804.

The product of its digits is 972, while the sum is 23.

The square root of 131323163 is about 11459.6318876306. The cubic root of 131323163 is about 508.2925895738.

Adding to 131323163 its reverse (361323131), we get a palindrome (492646294).

The spelling of 131323163 in words is "one hundred thirty-one million, three hundred twenty-three thousand, one hundred sixty-three".