2781203 has 2 divisors, whose sum is σ = 2781204. Its totient is φ = 2781202.

The previous prime is 2781199. The next prime is 2781209. The reversal of 2781203 is 3021872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2781203 - 2² = 2781199 is a prime.

It is not a weakly prime, because it can be changed into another prime (2781209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390601 + 1390602.

It is an arithmetic number, because the mean of its divisors is an integer number (1390602).

2^2781203 is an apocalyptic number.

2781203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781203 is an equidigital number, since it uses as much as digits as its factorization.

2781203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2781203 is about 1667.6939167605. The cubic root of 2781203 is about 140.6298660374.

The spelling of 2781203 in words is "two million, seven hundred eighty-one thousand, two hundred three".