438231 has 4 divisors (see below), whose sum is σ = 584312. Its totient is φ = 292152.

The previous prime is 438223. The next prime is 438233. The reversal of 438231 is 132834.

It is a happy number.

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

It is not a de Polignac number, because 438231 - 2³ = 438223 is a prime.

It is a super-2 number, since 2×438231² = 384092818722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 438198 and 438207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438233) 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, 73036 + ... + 73041.

It is an arithmetic number, because the mean of its divisors is an integer number (146078).

2⁴³⁸²³¹ is an apocalyptic number.

438231 is a deficient number, since it is larger than the sum of its proper divisors (146081).

438231 is a wasteful number, since it uses less digits than its factorization.

438231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146080.

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

The square root of 438231 is about 661.9901811961. The cubic root of 438231 is about 75.9569816567.

The spelling of 438231 in words is "four hundred thirty-eight thousand, two hundred thirty-one".