2243431 has 2 divisors, whose sum is σ = 2243432. Its totient is φ = 2243430.

The previous prime is 2243429. The next prime is 2243453. The reversal of 2243431 is 1343422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2243431 - 2¹ = 2243429 is a prime.

It is a super-2 number, since 2×2243431² = 10065965303522, which contains 22 as substring.

Together with 2243429, it forms a pair of twin primes.

It is a Chen prime.

2243431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2243399 and 2243408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121715 + 1121716.

It is an arithmetic number, because the mean of its divisors is an integer number (1121716).

2^2243431 is an apocalyptic number.

2243431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243431 is an equidigital number, since it uses as much as digits as its factorization.

2243431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 19.

The square root of 2243431 is about 1497.8087327827. The cubic root of 2243431 is about 130.9094220700.

Adding to 2243431 its reverse (1343422), we get a palindrome (3586853).

Subtracting from 2243431 its reverse (1343422), we obtain a palindrome (900009).

It can be divided in two parts, 224 and 3431, that added together give a triangular number (3655 = T₈₅).

The spelling of 2243431 in words is "two million, two hundred forty-three thousand, four hundred thirty-one".