131322163 has 4 divisors (see below), whose sum is σ = 150082480. Its totient is φ = 112561848.

The previous prime is 131322151. The next prime is 131322187. The reversal of 131322163 is 361223131.

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

It is not a de Polignac number, because 131322163 - 2⁵ = 131322131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131322463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9380148 + ... + 9380161.

It is an arithmetic number, because the mean of its divisors is an integer number (37520620).

Almost surely, 2^131322163 is an apocalyptic number.

131322163 is a deficient number, since it is larger than the sum of its proper divisors (18760317).

131322163 is an equidigital number, since it uses as much as digits as its factorization.

131322163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18760316.

The product of its digits is 648, while the sum is 22.

The square root of 131322163 is about 11459.5882561286. The cubic root of 131322163 is about 508.2912993879.

Adding to 131322163 its reverse (361223131), we get a palindrome (492545294).

The spelling of 131322163 in words is "one hundred thirty-one million, three hundred twenty-two thousand, one hundred sixty-three".