131205443 has 2 divisors, whose sum is σ = 131205444. Its totient is φ = 131205442.

The previous prime is 131205419. The next prime is 131205467. The reversal of 131205443 is 344502131.

It is a balanced prime because it is at equal distance from previous prime (131205419) and next prime (131205467).

It is a cyclic number.

It is not a de Polignac number, because 131205443 - 2⁸ = 131205187 is a prime.

It is not a weakly prime, because it can be changed into another prime (131205493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65602721 + 65602722.

It is an arithmetic number, because the mean of its divisors is an integer number (65602722).

Almost surely, 2^131205443 is an apocalyptic number.

131205443 is a deficient number, since it is larger than the sum of its proper divisors (1).

131205443 is an equidigital number, since it uses as much as digits as its factorization.

131205443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 131205443 is about 11454.4944454131. The cubic root of 131205443 is about 508.1406638700.

Adding to 131205443 its reverse (344502131), we get a palindrome (475707574).

The spelling of 131205443 in words is "one hundred thirty-one million, two hundred five thousand, four hundred forty-three".