423813 has 8 divisors (see below), whose sum is σ = 608608. Its totient is φ = 260784.

The previous prime is 423803. The next prime is 423823. The reversal of 423813 is 318324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (423803) and next prime (423823).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423813 - 2⁵ = 423781 is a prime.

423813 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 423813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5395 + ... + 5472.

It is an arithmetic number, because the mean of its divisors is an integer number (76076).

2⁴²³⁸¹³ is an apocalyptic number.

It is an amenable number.

423813 is a deficient number, since it is larger than the sum of its proper divisors (184795).

423813 is a wasteful number, since it uses less digits than its factorization.

423813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10883.

The product of its digits is 576, while the sum is 21.

The square root of 423813 is about 651.0092165246. The cubic root of 423813 is about 75.1146690353.

The spelling of 423813 in words is "four hundred twenty-three thousand, eight hundred thirteen".