1213302109 has 2 divisors, whose sum is σ = 1213302110. Its totient is φ = 1213302108.

The previous prime is 1213302059. The next prime is 1213302119. The reversal of 1213302109 is 9012033121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1142237209 + 71064900 = 33797^2 + 8430^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213302109 - 2⁹ = 1213301597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213302109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213302119) 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, 606651054 + 606651055.

It is an arithmetic number, because the mean of its divisors is an integer number (606651055).

Almost surely, 2^1213302109 is an apocalyptic number.

It is an amenable number.

1213302109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213302109 is an equidigital number, since it uses as much as digits as its factorization.

1213302109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1213302109 is about 34832.4864027821. The cubic root of 1213302109 is about 1066.5707047243.

The spelling of 1213302109 in words is "one billion, two hundred thirteen million, three hundred two thousand, one hundred nine".