11331121313 has 2 divisors, whose sum is σ = 11331121314. Its totient is φ = 11331121312.

The previous prime is 11331121301. The next prime is 11331121337. The reversal of 11331121313 is 31312113311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10446475264 + 884646049 = 102208^2 + 29743^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331121313 - 2⁴ = 11331121297 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331121363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665560656 + 5665560657.

It is an arithmetic number, because the mean of its divisors is an integer number (5665560657).

Almost surely, 2^11331121313 is an apocalyptic number.

It is an amenable number.

11331121313 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331121313 is an equidigital number, since it uses as much as digits as its factorization.

11331121313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 20.

Adding to 11331121313 its reverse (31312113311), we get a palindrome (42643234624).

The spelling of 11331121313 in words is "eleven billion, three hundred thirty-one million, one hundred twenty-one thousand, three hundred thirteen".