1243352113 has 2 divisors, whose sum is σ = 1243352114. Its totient is φ = 1243352112.

The previous prime is 1243352093. The next prime is 1243352167. The reversal of 1243352113 is 3112533421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1238547249 + 4804864 = 35193^2 + 2192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243352113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243352713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621676056 + 621676057.

It is an arithmetic number, because the mean of its divisors is an integer number (621676057).

Almost surely, 2^1243352113 is an apocalyptic number.

It is an amenable number.

1243352113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243352113 is an equidigital number, since it uses as much as digits as its factorization.

1243352113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 1243352113 is about 35261.1984056129. The cubic root of 1243352113 is about 1075.3042911438.

Adding to 1243352113 its reverse (3112533421), we get a palindrome (4355885534).

It can be divided in two parts, 12433 and 52113, that added together give a palindrome (64546).

The spelling of 1243352113 in words is "one billion, two hundred forty-three million, three hundred fifty-two thousand, one hundred thirteen".