131443343 has 4 divisors (see below), whose sum is σ = 131580240. Its totient is φ = 131306448.

The previous prime is 131443307. The next prime is 131443373. The reversal of 131443343 is 343344131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343344131 = 13 ⋅26411087.

It is a cyclic number.

It is not a de Polignac number, because 131443343 - 2¹⁰ = 131442319 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 (131443373) 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, 66998 + ... + 68931.

It is an arithmetic number, because the mean of its divisors is an integer number (32895060).

Almost surely, 2^131443343 is an apocalyptic number.

131443343 is a deficient number, since it is larger than the sum of its proper divisors (136897).

131443343 is an equidigital number, since it uses as much as digits as its factorization.

131443343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136896.

The product of its digits is 5184, while the sum is 26.

The square root of 131443343 is about 11464.8743124380. The cubic root of 131443343 is about 508.4475964467.

Adding to 131443343 its reverse (343344131), we get a palindrome (474787474).

The spelling of 131443343 in words is "one hundred thirty-one million, four hundred forty-three thousand, three hundred forty-three".