131232443 has 4 divisors (see below), whose sum is σ = 131282160. Its totient is φ = 131182728.

The previous prime is 131232433. The next prime is 131232467. The reversal of 131232443 is 344232131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344232131 = 67 ⋅5137793.

It is a cyclic number.

It is not a de Polignac number, because 131232443 - 2⁴ = 131232427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131232433) 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, 20663 + ... + 26256.

It is an arithmetic number, because the mean of its divisors is an integer number (32820540).

Almost surely, 2^131232443 is an apocalyptic number.

131232443 is a deficient number, since it is larger than the sum of its proper divisors (49717).

131232443 is an equidigital number, since it uses as much as digits as its factorization.

131232443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49716.

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

The square root of 131232443 is about 11455.6729614632. The cubic root of 131232443 is about 508.1755172435.

Adding to 131232443 its reverse (344232131), we get a palindrome (475464574).

The spelling of 131232443 in words is "one hundred thirty-one million, two hundred thirty-two thousand, four hundred forty-three".