2813231 has 4 divisors (see below), whose sum is σ = 2816712. Its totient is φ = 2809752.

The previous prime is 2813227. The next prime is 2813249. The reversal of 2813231 is 1323182.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2813231 - 2² = 2813227 is a prime.

It is a super-2 number, since 2×2813231² = 15828537318722, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813131) 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, 176 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (704178).

2^2813231 is an apocalyptic number.

2813231 is a deficient number, since it is larger than the sum of its proper divisors (3481).

2813231 is a wasteful number, since it uses less digits than its factorization.

2813231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480.

The product of its digits is 288, while the sum is 20.

The square root of 2813231 is about 1677.2689110575. The cubic root of 2813231 is about 141.1676325588.

The spelling of 2813231 in words is "two million, eight hundred thirteen thousand, two hundred thirty-one".