2247731 has 4 divisors (see below), whose sum is σ = 2251992. Its totient is φ = 2243472.

The previous prime is 2247727. The next prime is 2247733. The reversal of 2247731 is 1377422.

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

It is a cyclic number.

It is not a de Polignac number, because 2247731 - 2² = 2247727 is a prime.

It is a super-2 number, since 2×2247731² = 10104589296722, 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 2247731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2247733) 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, 1205 + ... + 2438.

It is an arithmetic number, because the mean of its divisors is an integer number (562998).

2^2247731 is an apocalyptic number.

2247731 is a deficient number, since it is larger than the sum of its proper divisors (4261).

2247731 is an equidigital number, since it uses as much as digits as its factorization.

2247731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260.

The product of its digits is 2352, while the sum is 26.

The square root of 2247731 is about 1499.2434758904. The cubic root of 2247731 is about 130.9930070272.

The spelling of 2247731 in words is "two million, two hundred forty-seven thousand, seven hundred thirty-one".