423381 has 8 divisors (see below), whose sum is σ = 645184. Its totient is φ = 241920.

The previous prime is 423347. The next prime is 423389. The reversal of 423381 is 183324.

423381 = T₈₃ + T₈₄ + ... + T₁₄₅.

It is a happy number.

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

It is not a de Polignac number, because 423381 - 2⁹ = 422869 is a prime.

It is a super-2 number, since 2×423381² = 358502942322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 20161 = 423381 / (4 + 2 + 3 + 3 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10060 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (80648).

2⁴²³³⁸¹ is an apocalyptic number.

It is an amenable number.

423381 is a deficient number, since it is larger than the sum of its proper divisors (221803).

423381 is a wasteful number, since it uses less digits than its factorization.

423381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20171.

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

The square root of 423381 is about 650.6773393933. The cubic root of 423381 is about 75.0891384603.

The spelling of 423381 in words is "four hundred twenty-three thousand, three hundred eighty-one".