387231 has 8 divisors (see below), whose sum is σ = 556080. Its totient is φ = 238272.

The previous prime is 387227. The next prime is 387253. The reversal of 387231 is 132783.

387231 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 387231 - 2² = 387227 is a prime.

It is a super-2 number, since 2×387231² = 299895694722, which contains 22 as substring.

It is an Ulam number.

387231 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387281) 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, 4926 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (69510).

2³⁸⁷²³¹ is an apocalyptic number.

387231 is a deficient number, since it is larger than the sum of its proper divisors (168849).

387231 is a wasteful number, since it uses less digits than its factorization.

387231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9945.

The product of its digits is 1008, while the sum is 24.

The square root of 387231 is about 622.2788763890. The cubic root of 387231 is about 72.8881128290. Note that the first 3 decimals are identical.

The spelling of 387231 in words is "three hundred eighty-seven thousand, two hundred thirty-one".