2243531 has 2 divisors, whose sum is σ = 2243532. Its totient is φ = 2243530.

The previous prime is 2243503. The next prime is 2243537. The reversal of 2243531 is 1353422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2243531 - 2⁶ = 2243467 is a prime.

It is a super-2 number, since 2×2243531² = 10066862695922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2243537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121765 + 1121766.

It is an arithmetic number, because the mean of its divisors is an integer number (1121766).

2^2243531 is an apocalyptic number.

2243531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243531 is an equidigital number, since it uses as much as digits as its factorization.

2243531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 20.

The square root of 2243531 is about 1497.8421145101. The cubic root of 2243531 is about 130.9113671187.

Adding to 2243531 its reverse (1353422), we get a palindrome (3596953).

The spelling of 2243531 in words is "two million, two hundred forty-three thousand, five hundred thirty-one".