2249731 has 4 divisors (see below), whose sum is σ = 2454264. Its totient is φ = 2045200.

The previous prime is 2249719. The next prime is 2249743. The reversal of 2249731 is 1379422.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2249719) and next prime (2249743).

It is a cyclic number.

It is not a de Polignac number, because 2249731 - 2⁷ = 2249603 is a prime.

It is a super-2 number, since 2×2249731² = 10122579144722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2249731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2249231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102250 + ... + 102271.

It is an arithmetic number, because the mean of its divisors is an integer number (613566).

2^2249731 is an apocalyptic number.

2249731 is a deficient number, since it is larger than the sum of its proper divisors (204533).

2249731 is a wasteful number, since it uses less digits than its factorization.

2249731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204532.

The product of its digits is 3024, while the sum is 28.

The square root of 2249731 is about 1499.9103306531. The cubic root of 2249731 is about 131.0318474324.

The spelling of 2249731 in words is "two million, two hundred forty-nine thousand, seven hundred thirty-one".