2270731 has 4 divisors (see below), whose sum is σ = 2273832. Its totient is φ = 2267632.

The previous prime is 2270717. The next prime is 2270759. The reversal of 2270731 is 1370722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1370722 = 2 ⋅685361.

It is a cyclic number.

It is not a de Polignac number, because 2270731 - 2¹⁷ = 2139659 is a prime.

It is a super-2 number, since 2×2270731² = 10312438548722, which contains 22 as substring.

It is a Duffinian number.

2270731 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2270771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (568458).

2^2270731 is an apocalyptic number.

2270731 is a deficient number, since it is larger than the sum of its proper divisors (3101).

2270731 is a wasteful number, since it uses less digits than its factorization.

2270731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 2270731 is about 1506.8944886753. The cubic root of 2270731 is about 131.4382887878.

Subtracting from 2270731 its reverse (1370722), we obtain a palindrome (900009).

The spelling of 2270731 in words is "two million, two hundred seventy thousand, seven hundred thirty-one".