3040781 has 2 divisors, whose sum is σ = 3040782. Its totient is φ = 3040780.

The previous prime is 3040777. The next prime is 3040787. The reversal of 3040781 is 1870403.

It is a happy number.

3040781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2775556 + 265225 = 1666^2 + 515^2 .

It is an emirp because it is prime and its reverse (1870403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3040781 - 2² = 3040777 is a prime.

It is a super-2 number, since 2×3040781² = 18492698179922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3040787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1520390 + 1520391.

It is an arithmetic number, because the mean of its divisors is an integer number (1520391).

Almost surely, 2^3040781 is an apocalyptic number.

It is an amenable number.

3040781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3040781 is an equidigital number, since it uses as much as digits as its factorization.

3040781 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 3040781 is about 1743.7835301436. The cubic root of 3040781 is about 144.8755333005.

The spelling of 3040781 in words is "three million, forty thousand, seven hundred eighty-one".