1243201301 has 2 divisors, whose sum is σ = 1243201302. Its totient is φ = 1243201300.

The previous prime is 1243201291. The next prime is 1243201327. The reversal of 1243201301 is 1031023421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067002225 + 176199076 = 32665^2 + 13274^2 .

It is an emirp because it is prime and its reverse (1031023421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1243201301 - 2¹⁸ = 1242939157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1243201301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243201391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621600650 + 621600651.

It is an arithmetic number, because the mean of its divisors is an integer number (621600651).

Almost surely, 2^1243201301 is an apocalyptic number.

It is an amenable number.

1243201301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243201301 is an equidigital number, since it uses as much as digits as its factorization.

1243201301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1243201301 is about 35259.0598428262. The cubic root of 1243201301 is about 1075.2608131549.

Adding to 1243201301 its reverse (1031023421), we get a palindrome (2274224722).

The spelling of 1243201301 in words is "one billion, two hundred forty-three million, two hundred one thousand, three hundred one".