423931238585 has 4 divisors (see below), whose sum is σ = 508717486308. Its totient is φ = 339144990864.

The previous prime is 423931238539. The next prime is 423931238603. The reversal of 423931238585 is 585832139324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 249184665856 + 174746572729 = 499184^2 + 418027^2 .

It is a cyclic number.

It is not a de Polignac number, because 423931238585 - 2⁸ = 423931238329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42393123854 + ... + 42393123863.

It is an arithmetic number, because the mean of its divisors is an integer number (127179371577).

Almost surely, 2^423931238585 is an apocalyptic number.

It is an amenable number.

423931238585 is a deficient number, since it is larger than the sum of its proper divisors (84786247723).

423931238585 is an equidigital number, since it uses as much as digits as its factorization.

423931238585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84786247722.

The product of its digits is 6220800, while the sum is 53.

The spelling of 423931238585 in words is "four hundred twenty-three billion, nine hundred thirty-one million, two hundred thirty-eight thousand, five hundred eighty-five".