2259731 has 2 divisors, whose sum is σ = 2259732. Its totient is φ = 2259730.

The previous prime is 2259707. The next prime is 2259739. The reversal of 2259731 is 1379522.

2259731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2259731 - 2¹⁸ = 1997587 is a prime.

It is a super-2 number, since 2×2259731² = 10212768384722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2259694 and 2259703.

It is not a weakly prime, because it can be changed into another prime (2259739) 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, 1129865 + 1129866.

It is an arithmetic number, because the mean of its divisors is an integer number (1129866).

2^2259731 is an apocalyptic number.

2259731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2259731 is an equidigital number, since it uses as much as digits as its factorization.

2259731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 2259731 is about 1503.2401671057. The cubic root of 2259731 is about 131.2257049514.

The spelling of 2259731 in words is "two million, two hundred fifty-nine thousand, seven hundred thirty-one".