1217983133 has 2 divisors, whose sum is σ = 1217983134. Its totient is φ = 1217983132.

The previous prime is 1217983121. The next prime is 1217983141. The reversal of 1217983133 is 3313897121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766293124 + 451690009 = 27682^2 + 21253^2 .

It is a cyclic number.

It is not a de Polignac number, because 1217983133 - 2¹⁰ = 1217982109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217983153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608991566 + 608991567.

It is an arithmetic number, because the mean of its divisors is an integer number (608991567).

Almost surely, 2^1217983133 is an apocalyptic number.

It is an amenable number.

1217983133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217983133 is an equidigital number, since it uses as much as digits as its factorization.

1217983133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 1217983133 is about 34899.6150838372. The cubic root of 1217983133 is about 1067.9405850627.

The spelling of 1217983133 in words is "one billion, two hundred seventeen million, nine hundred eighty-three thousand, one hundred thirty-three".