2816231 has 4 divisors (see below), whose sum is σ = 3072264. Its totient is φ = 2560200.

The previous prime is 2816221. The next prime is 2816239. The reversal of 2816231 is 1326182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2816231 - 2¹⁰ = 2815207 is a prime.

It is a super-2 number, since 2×2816231² = 15862314090722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2816197 and 2816206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2816239) 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, 128000 + ... + 128021.

It is an arithmetic number, because the mean of its divisors is an integer number (768066).

2^2816231 is an apocalyptic number.

2816231 is a deficient number, since it is larger than the sum of its proper divisors (256033).

2816231 is a wasteful number, since it uses less digits than its factorization.

2816231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256032.

The product of its digits is 576, while the sum is 23.

The square root of 2816231 is about 1678.1629837414. The cubic root of 2816231 is about 141.2177946260.

The spelling of 2816231 in words is "two million, eight hundred sixteen thousand, two hundred thirty-one".