2878313 has 2 divisors, whose sum is σ = 2878314. Its totient is φ = 2878312.

The previous prime is 2878303. The next prime is 2878331. The reversal of 2878313 is 3138782.

Together with next prime (2878331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2715904 + 162409 = 1648^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878313 - 2⁴ = 2878297 is a prime.

It is a Sophie Germain prime.

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 2878313.

It is not a weakly prime, because it can be changed into another prime (2878303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439156 + 1439157.

It is an arithmetic number, because the mean of its divisors is an integer number (1439157).

2^2878313 is an apocalyptic number.

It is an amenable number.

2878313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2878313 is an equidigital number, since it uses as much as digits as its factorization.

2878313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 2878313 is about 1696.5591648982. The cubic root of 2878313 is about 142.2479467583.

The spelling of 2878313 in words is "two million, eight hundred seventy-eight thousand, three hundred thirteen".