1311123301 has 2 divisors, whose sum is σ = 1311123302. Its totient is φ = 1311123300.

The previous prime is 1311123287. The next prime is 1311123313. The reversal of 1311123301 is 1033211131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1267431201 + 43692100 = 35601^2 + 6610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311123301 - 2⁷ = 1311123173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311123391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655561650 + 655561651.

It is an arithmetic number, because the mean of its divisors is an integer number (655561651).

Almost surely, 2^1311123301 is an apocalyptic number.

It is an amenable number.

1311123301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311123301 is an equidigital number, since it uses as much as digits as its factorization.

1311123301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1311123301 is about 36209.4366291441. The cubic root of 1311123301 is about 1094.4968396441.

Adding to 1311123301 its reverse (1033211131), we get a palindrome (2344334432).

The spelling of 1311123301 in words is "one billion, three hundred eleven million, one hundred twenty-three thousand, three hundred one".