387213 has 8 divisors (see below), whose sum is σ = 519168. Its totient is φ = 256704.

The previous prime is 387203. The next prime is 387227. The reversal of 387213 is 312783.

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

It is not a de Polignac number, because 387213 - 2⁴ = 387197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387203) 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, 820 + ... + 1202.

It is an arithmetic number, because the mean of its divisors is an integer number (64896).

2³⁸⁷²¹³ is an apocalyptic number.

It is an amenable number.

387213 is a deficient number, since it is larger than the sum of its proper divisors (131955).

387213 is a wasteful number, since it uses less digits than its factorization.

387213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723.

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

The square root of 387213 is about 622.2644132521. The cubic root of 387213 is about 72.8869834373.

Adding to 387213 its reverse (312783), we get a palindrome (699996).

The spelling of 387213 in words is "three hundred eighty-seven thousand, two hundred thirteen".