131342223 has 4 divisors (see below), whose sum is σ = 175122968. Its totient is φ = 87561480.

The previous prime is 131342207. The next prime is 131342227. The reversal of 131342223 is 322243131.

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

It is not a de Polignac number, because 131342223 - 2⁴ = 131342207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131342223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131342227) 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, 21890368 + ... + 21890373.

It is an arithmetic number, because the mean of its divisors is an integer number (43780742).

Almost surely, 2^131342223 is an apocalyptic number.

131342223 is a deficient number, since it is larger than the sum of its proper divisors (43780745).

131342223 is an equidigital number, since it uses as much as digits as its factorization.

131342223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43780744.

The product of its digits is 864, while the sum is 21.

The square root of 131342223 is about 11460.4634723034. The cubic root of 131342223 is about 508.3171792651.

Adding to 131342223 its reverse (322243131), we get a palindrome (453585354).

The spelling of 131342223 in words is "one hundred thirty-one million, three hundred forty-two thousand, two hundred twenty-three".