131432443 has 4 divisors (see below), whose sum is σ = 138349960. Its totient is φ = 124514928.

The previous prime is 131432407. The next prime is 131432449. The reversal of 131432443 is 344234131.

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 131432443 - 2⁹ = 131431931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131432449) 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, 3458730 + ... + 3458767.

It is an arithmetic number, because the mean of its divisors is an integer number (34587490).

Almost surely, 2^131432443 is an apocalyptic number.

131432443 is a deficient number, since it is larger than the sum of its proper divisors (6917517).

131432443 is an equidigital number, since it uses as much as digits as its factorization.

131432443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917516.

The product of its digits is 3456, while the sum is 25.

The square root of 131432443 is about 11464.3989375806. The cubic root of 131432443 is about 508.4335416408.

Adding to 131432443 its reverse (344234131), we get a palindrome (475666574).

The spelling of 131432443 in words is "one hundred thirty-one million, four hundred thirty-two thousand, four hundred forty-three".