432381 has 8 divisors (see below), whose sum is σ = 582624. Its totient is φ = 285200.

The previous prime is 432373. The next prime is 432389. The reversal of 432381 is 183234.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (432373) and next prime (432389).

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

It is a cyclic number.

It is not a de Polignac number, because 432381 - 2³ = 432373 is a prime.

It is a super-2 number, since 2×432381² = 373906658322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432389) 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, 411 + ... + 1016.

It is an arithmetic number, because the mean of its divisors is an integer number (72828).

2⁴³²³⁸¹ is an apocalyptic number.

It is an amenable number.

432381 is a deficient number, since it is larger than the sum of its proper divisors (150243).

432381 is a wasteful number, since it uses less digits than its factorization.

432381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

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

The square root of 432381 is about 657.5568416495. The cubic root of 432381 is about 75.6174800710.

It can be divided in two parts, 4 and 32381, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 432381 in words is "four hundred thirty-two thousand, three hundred eighty-one".