1213443061 has 2 divisors, whose sum is σ = 1213443062. Its totient is φ = 1213443060.

The previous prime is 1213443053. The next prime is 1213443073. The reversal of 1213443061 is 1603443121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1208952900 + 4490161 = 34770^2 + 2119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213443061 - 2³ = 1213443053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213443001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606721530 + 606721531.

It is an arithmetic number, because the mean of its divisors is an integer number (606721531).

Almost surely, 2^1213443061 is an apocalyptic number.

It is an amenable number.

1213443061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213443061 is an equidigital number, since it uses as much as digits as its factorization.

1213443061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1213443061 is about 34834.5096276666. The cubic root of 1213443061 is about 1066.6120050874.

Adding to 1213443061 its reverse (1603443121), we get a palindrome (2816886182).

The spelling of 1213443061 in words is "one billion, two hundred thirteen million, four hundred forty-three thousand, sixty-one".