387133 has 4 divisors (see below), whose sum is σ = 391068. Its totient is φ = 383200.

The previous prime is 387109. The next prime is 387137. The reversal of 387133 is 331783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331783 = 71 ⋅4673.

It can be written as a sum of positive squares in 2 ways, for example, as 248004 + 139129 = 498^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 387133 - 2⁹ = 386621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387098 and 387107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (97767).

2³⁸⁷¹³³ is an apocalyptic number.

It is an amenable number.

387133 is a deficient number, since it is larger than the sum of its proper divisors (3935).

387133 is a wasteful number, since it uses less digits than its factorization.

387133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934.

The product of its digits is 1512, while the sum is 25.

The square root of 387133 is about 622.2001285760. The cubic root of 387133 is about 72.8819634954.

The spelling of 387133 in words is "three hundred eighty-seven thousand, one hundred thirty-three".