3638231 has 4 divisors (see below), whose sum is σ = 3679200. Its totient is φ = 3597264.

The previous prime is 3638227. The next prime is 3638233. The reversal of 3638231 is 1328363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1328363 = 17 ⋅78139.

It is a cyclic number.

It is not a de Polignac number, because 3638231 - 2² = 3638227 is a prime.

It is a super-2 number, since 2×3638231² = 26473449618722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3638231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638233) 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, 20351 + ... + 20528.

It is an arithmetic number, because the mean of its divisors is an integer number (919800).

Almost surely, 2^3638231 is an apocalyptic number.

3638231 is a deficient number, since it is larger than the sum of its proper divisors (40969).

3638231 is an equidigital number, since it uses as much as digits as its factorization.

3638231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40968.

The product of its digits is 2592, while the sum is 26.

The square root of 3638231 is about 1907.4147425246. The cubic root of 3638231 is about 153.8025101009.

The spelling of 3638231 in words is "three million, six hundred thirty-eight thousand, two hundred thirty-one".