131302243 has 4 divisors (see below), whose sum is σ = 131462608. Its totient is φ = 131141880.

The previous prime is 131302229. The next prime is 131302261. The reversal of 131302243 is 342203131.

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 131302243 - 2⁵ = 131302211 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 131302243.

It is not an unprimeable number, because it can be changed into a prime (131302943) 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, 78948 + ... + 80593.

It is an arithmetic number, because the mean of its divisors is an integer number (32865652).

Almost surely, 2^131302243 is an apocalyptic number.

131302243 is a deficient number, since it is larger than the sum of its proper divisors (160365).

131302243 is an equidigital number, since it uses as much as digits as its factorization.

131302243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160364.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131302243 is about 11458.7190819917. The cubic root of 131302243 is about 508.2655975200.

Adding to 131302243 its reverse (342203131), we get a palindrome (473505374).

The spelling of 131302243 in words is "one hundred thirty-one million, three hundred two thousand, two hundred forty-three".