431211071 has 2 divisors, whose sum is σ = 431211072. Its totient is φ = 431211070.

The previous prime is 431211059. The next prime is 431211113. The reversal of 431211071 is 170112134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431211071 - 2⁶ = 431211007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431211371) 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, 215605535 + 215605536.

It is an arithmetic number, because the mean of its divisors is an integer number (215605536).

Almost surely, 2^431211071 is an apocalyptic number.

431211071 is a deficient number, since it is larger than the sum of its proper divisors (1).

431211071 is an equidigital number, since it uses as much as digits as its factorization.

431211071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 431211071 is about 20765.6223359667. The cubic root of 431211071 is about 755.4921697746.

The spelling of 431211071 in words is "four hundred thirty-one million, two hundred eleven thousand, seventy-one".