1217031043 has 2 divisors, whose sum is σ = 1217031044. Its totient is φ = 1217031042.

The previous prime is 1217031007. The next prime is 1217031119. The reversal of 1217031043 is 3401307121.

It is a weak prime.

It is an emirp because it is prime and its reverse (3401307121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1217031043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1217031943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608515521 + 608515522.

It is an arithmetic number, because the mean of its divisors is an integer number (608515522).

Almost surely, 2^1217031043 is an apocalyptic number.

1217031043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217031043 is an equidigital number, since it uses as much as digits as its factorization.

1217031043 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 1217031043 is about 34885.9720088175. The cubic root of 1217031043 is about 1067.6622449733.

Adding to 1217031043 its reverse (3401307121), we get a palindrome (4618338164).

The spelling of 1217031043 in words is "one billion, two hundred seventeen million, thirty-one thousand, forty-three".