1343991241 has 2 divisors, whose sum is σ = 1343991242. Its totient is φ = 1343991240.

The previous prime is 1343991221. The next prime is 1343991289. The reversal of 1343991241 is 1421993431.

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., 1324596025 + 19395216 = 36395^2 + 4404^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343991241 - 2⁹ = 1343990729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1343991241.

It is not a weakly prime, because it can be changed into another prime (1343991221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671995620 + 671995621.

It is an arithmetic number, because the mean of its divisors is an integer number (671995621).

Almost surely, 2^1343991241 is an apocalyptic number.

It is an amenable number.

1343991241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343991241 is an equidigital number, since it uses as much as digits as its factorization.

1343991241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 1343991241 is about 36660.4860987958. The cubic root of 1343991241 is about 1103.5672731845.

The spelling of 1343991241 in words is "one billion, three hundred forty-three million, nine hundred ninety-one thousand, two hundred forty-one".