423907811 has 2 divisors, whose sum is σ = 423907812. Its totient is φ = 423907810.

The previous prime is 423907793. The next prime is 423907817. The reversal of 423907811 is 118709324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423907811 - 2¹⁰ = 423906787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423907817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211953905 + 211953906.

It is an arithmetic number, because the mean of its divisors is an integer number (211953906).

Almost surely, 2^423907811 is an apocalyptic number.

423907811 is a deficient number, since it is larger than the sum of its proper divisors (1).

423907811 is an equidigital number, since it uses as much as digits as its factorization.

423907811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 423907811 is about 20589.0216134716. The cubic root of 423907811 is about 751.2026990631.

The spelling of 423907811 in words is "four hundred twenty-three million, nine hundred seven thousand, eight hundred eleven".