423868319 has 4 divisors (see below), whose sum is σ = 484420944. Its totient is φ = 363315696.

The previous prime is 423868309. The next prime is 423868349. The reversal of 423868319 is 913868324.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423868319 is a prime.

It is a super-2 number, since 2×423868319² = 359328703703771522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423868319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423868309) 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, 30276302 + ... + 30276315.

It is an arithmetic number, because the mean of its divisors is an integer number (121105236).

Almost surely, 2^423868319 is an apocalyptic number.

423868319 is a deficient number, since it is larger than the sum of its proper divisors (60552625).

423868319 is an equidigital number, since it uses as much as digits as its factorization.

423868319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60552624.

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

The square root of 423868319 is about 20588.0625363340. The cubic root of 423868319 is about 751.1793705488.

It can be divided in two parts, 42386 and 8319, that added together give a palindrome (50705).

The spelling of 423868319 in words is "four hundred twenty-three million, eight hundred sixty-eight thousand, three hundred nineteen".