434311391 has 2 divisors, whose sum is σ = 434311392. Its totient is φ = 434311390.

The previous prime is 434311363. The next prime is 434311403. The reversal of 434311391 is 193113434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 434311391 - 2¹⁰ = 434310367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434311991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217155695 + 217155696.

It is an arithmetic number, because the mean of its divisors is an integer number (217155696).

Almost surely, 2^434311391 is an apocalyptic number.

434311391 is a deficient number, since it is larger than the sum of its proper divisors (1).

434311391 is an equidigital number, since it uses as much as digits as its factorization.

434311391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 434311391 is about 20840.1389390762. The cubic root of 434311391 is about 757.2984594553.

The spelling of 434311391 in words is "four hundred thirty-four million, three hundred eleven thousand, three hundred ninety-one".