431389241 has 2 divisors, whose sum is σ = 431389242. Its totient is φ = 431389240.

The previous prime is 431389187. The next prime is 431389247. The reversal of 431389241 is 142983134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331968400 + 99420841 = 18220^2 + 9971^2 .

It is a cyclic number.

It is not a de Polignac number, because 431389241 - 2¹⁸ = 431127097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (431389247) 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 as a sum of consecutive naturals, namely, 215694620 + 215694621.

It is an arithmetic number, because the mean of its divisors is an integer number (215694621).

Almost surely, 2^431389241 is an apocalyptic number.

It is an amenable number.

431389241 is a deficient number, since it is larger than the sum of its proper divisors (1).

431389241 is an equidigital number, since it uses as much as digits as its factorization.

431389241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 431389241 is about 20769.9119160385. The cubic root of 431389241 is about 755.5962081556.

The spelling of 431389241 in words is "four hundred thirty-one million, three hundred eighty-nine thousand, two hundred forty-one".