1217001343 has 2 divisors, whose sum is σ = 1217001344. Its totient is φ = 1217001342.

The previous prime is 1217001329. The next prime is 1217001347. The reversal of 1217001343 is 3431007121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1217001343 - 2¹⁷ = 1216870271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217001347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608500671 + 608500672.

It is an arithmetic number, because the mean of its divisors is an integer number (608500672).

Almost surely, 2^1217001343 is an apocalyptic number.

1217001343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217001343 is an equidigital number, since it uses as much as digits as its factorization.

1217001343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1217001343 is about 34885.5463336895. The cubic root of 1217001343 is about 1067.6535599506.

Adding to 1217001343 its reverse (3431007121), we get a palindrome (4648008464).

The spelling of 1217001343 in words is "one billion, two hundred seventeen million, one thousand, three hundred forty-three".