1243313371 has 2 divisors, whose sum is σ = 1243313372. Its totient is φ = 1243313370.

The previous prime is 1243313347. The next prime is 1243313381. The reversal of 1243313371 is 1733133421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243313371 - 2⁵ = 1243313339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243313381) 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, 621656685 + 621656686.

It is an arithmetic number, because the mean of its divisors is an integer number (621656686).

Almost surely, 2^1243313371 is an apocalyptic number.

1243313371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243313371 is an equidigital number, since it uses as much as digits as its factorization.

1243313371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 1243313371 is about 35260.6490439413. The cubic root of 1243313371 is about 1075.2931224461.

Adding to 1243313371 its reverse (1733133421), we get a palindrome (2976446792).

The spelling of 1243313371 in words is "one billion, two hundred forty-three million, three hundred thirteen thousand, three hundred seventy-one".