2840313 has 16 divisors (see below), whose sum is σ = 4468736. Its totient is φ = 1570320.

The previous prime is 2840303. The next prime is 2840353. The reversal of 2840313 is 3130482.

It is a happy number.

It is not a de Polignac number, because 2840313 - 2⁵ = 2840281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2840313.

It is not an unprimeable number, because it can be changed into a prime (2840303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1531 + ... + 2832.

It is an arithmetic number, because the mean of its divisors is an integer number (279296).

2^2840313 is an apocalyptic number.

It is an amenable number.

2840313 is a deficient number, since it is larger than the sum of its proper divisors (1628423).

2840313 is a wasteful number, since it uses less digits than its factorization.

2840313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2840313 is about 1685.3228177415. The cubic root of 2840313 is about 141.6191773158.

Adding to 2840313 its reverse (3130482), we get a palindrome (5970795).

The spelling of 2840313 in words is "two million, eight hundred forty thousand, three hundred thirteen".