423688319 has 4 divisors (see below), whose sum is σ = 424551720. Its totient is φ = 422824920.

The previous prime is 423688303. The next prime is 423688339. The reversal of 423688319 is 913886324.

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

It is a cyclic number.

It is not a de Polignac number, because 423688319 - 2⁴ = 423688303 is a prime.

It is a super-2 number, since 2×423688319² = 359023583314091522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423688319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423688339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430964 + ... + 431945.

It is an arithmetic number, because the mean of its divisors is an integer number (106137930).

Almost surely, 2^423688319 is an apocalyptic number.

423688319 is a deficient number, since it is larger than the sum of its proper divisors (863401).

423688319 is an equidigital number, since it uses as much as digits as its factorization.

423688319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863400.

The product of its digits is 248832, while the sum is 44.

The square root of 423688319 is about 20583.6906068858. The cubic root of 423688319 is about 751.0730235027.

The spelling of 423688319 in words is "four hundred twenty-three million, six hundred eighty-eight thousand, three hundred nineteen".