1243225343 has 2 divisors, whose sum is σ = 1243225344. Its totient is φ = 1243225342.

The previous prime is 1243225337. The next prime is 1243225349. The reversal of 1243225343 is 3435223421.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1243225337) and next prime (1243225349).

It is a cyclic number.

It is not a de Polignac number, because 1243225343 - 2⁴ = 1243225327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243225349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621612671 + 621612672.

It is an arithmetic number, because the mean of its divisors is an integer number (621612672).

Almost surely, 2^1243225343 is an apocalyptic number.

1243225343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243225343 is an equidigital number, since it uses as much as digits as its factorization.

1243225343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 29.

The square root of 1243225343 is about 35259.4007748288. The cubic root of 1243225343 is about 1075.2677445220.

Adding to 1243225343 its reverse (3435223421), we get a palindrome (4678448764).

The spelling of 1243225343 in words is "one billion, two hundred forty-three million, two hundred twenty-five thousand, three hundred forty-three".