2820313 has 2 divisors, whose sum is σ = 2820314. Its totient is φ = 2820312.

The previous prime is 2820271. The next prime is 2820319. The reversal of 2820313 is 3130282.

2820313 = 1187² + 1188².

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1411344 + 1408969 = 1188^2 + 1187^2 .

It is a cyclic number.

It is not a de Polignac number, because 2820313 - 2⁹ = 2819801 is a prime.

It is not a weakly prime, because it can be changed into another prime (2820319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410156 + 1410157.

It is an arithmetic number, because the mean of its divisors is an integer number (1410157).

2^2820313 is an apocalyptic number.

2820313 is the 1188-th centered square number.

It is an amenable number.

2820313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2820313 is an equidigital number, since it uses as much as digits as its factorization.

2820313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2820313 is about 1679.3787541826. The cubic root of 2820313 is about 141.2859912983.

Adding to 2820313 its reverse (3130282), we get a palindrome (5950595).

The spelling of 2820313 in words is "two million, eight hundred twenty thousand, three hundred thirteen".