131322243 has 16 divisors (see below), whose sum is σ = 198490880. Its totient is φ = 76559904.

The previous prime is 131322227. The next prime is 131322251. The reversal of 131322243 is 342223131.

It is not a de Polignac number, because 131322243 - 2⁴ = 131322227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131322223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87871 + ... + 89352.

It is an arithmetic number, because the mean of its divisors is an integer number (12405680).

Almost surely, 2^131322243 is an apocalyptic number.

131322243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131322243 is a deficient number, since it is larger than the sum of its proper divisors (67168637).

131322243 is a wasteful number, since it uses less digits than its factorization.

131322243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177258.

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

The square root of 131322243 is about 11459.5917466549. The cubic root of 131322243 is about 508.2914026031.

Adding to 131322243 its reverse (342223131), we get a palindrome (473545374).

The spelling of 131322243 in words is "one hundred thirty-one million, three hundred twenty-two thousand, two hundred forty-three".