2281831 has 2 divisors, whose sum is σ = 2281832. Its totient is φ = 2281830.

The previous prime is 2281823. The next prime is 2281861. The reversal of 2281831 is 1381822.

2281831 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 is a cyclic number.

It is not a de Polignac number, because 2281831 - 2³ = 2281823 is a prime.

It is a super-2 number, since 2×2281831² = 10413505425122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2281796 and 2281805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2281861) 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, 1140915 + 1140916.

It is an arithmetic number, because the mean of its divisors is an integer number (1140916).

2^2281831 is an apocalyptic number.

2281831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2281831 is an equidigital number, since it uses as much as digits as its factorization.

2281831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 25.

The square root of 2281831 is about 1510.5730700631. The cubic root of 2281831 is about 131.6521104099.

Subtracting from 2281831 its reverse (1381822), we obtain a palindrome (900009).

The spelling of 2281831 in words is "two million, two hundred eighty-one thousand, eight hundred thirty-one".