131443223 has 4 divisors (see below), whose sum is σ = 133294608. Its totient is φ = 129591840.

The previous prime is 131443219. The next prime is 131443237. The reversal of 131443223 is 322344131.

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 131443223 - 2² = 131443219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131443523) 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, 925586 + ... + 925727.

It is an arithmetic number, because the mean of its divisors is an integer number (33323652).

Almost surely, 2^131443223 is an apocalyptic number.

131443223 is a deficient number, since it is larger than the sum of its proper divisors (1851385).

131443223 is an equidigital number, since it uses as much as digits as its factorization.

131443223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851384.

The product of its digits is 1728, while the sum is 23.

The square root of 131443223 is about 11464.8690790606. The cubic root of 131443223 is about 508.4474417191.

Adding to 131443223 its reverse (322344131), we get a palindrome (453787354).

The spelling of 131443223 in words is "one hundred thirty-one million, four hundred forty-three thousand, two hundred twenty-three".