423320311 has 4 divisors (see below), whose sum is σ = 424455592. Its totient is φ = 422185032.

The previous prime is 423320299. The next prime is 423320321. The reversal of 423320311 is 113023324.

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-423320311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423320321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567081 + ... + 567826.

It is an arithmetic number, because the mean of its divisors is an integer number (106113898).

Almost surely, 2^423320311 is an apocalyptic number.

423320311 is a deficient number, since it is larger than the sum of its proper divisors (1135281).

423320311 is a wasteful number, since it uses less digits than its factorization.

423320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135280.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 423320311 is about 20574.7493544879. The cubic root of 423320311 is about 750.8555043712.

Adding to 423320311 its reverse (113023324), we get a palindrome (536343635).

The spelling of 423320311 in words is "four hundred twenty-three million, three hundred twenty thousand, three hundred eleven".