2540323 has 2 divisors, whose sum is σ = 2540324. Its totient is φ = 2540322.

The previous prime is 2540269. The next prime is 2540339. The reversal of 2540323 is 3230452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2540323 - 2²¹ = 443171 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 5⁵ + 4⁹ + 0 + 3⁵ + 2²¹ + 3¹¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2540323.

It is not a weakly prime, because it can be changed into another prime (2540393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270161 + 1270162.

It is an arithmetic number, because the mean of its divisors is an integer number (1270162).

2^2540323 is an apocalyptic number.

2540323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540323 is an equidigital number, since it uses as much as digits as its factorization.

2540323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 2540323 is about 1593.8390759421. The cubic root of 2540323 is about 136.4466822495.

Adding to 2540323 its reverse (3230452), we get a palindrome (5770775).

The spelling of 2540323 in words is "two million, five hundred forty thousand, three hundred twenty-three".