1311130202321 has 2 divisors, whose sum is σ = 1311130202322. Its totient is φ = 1311130202320.

The previous prime is 1311130202309. The next prime is 1311130202329. The reversal of 1311130202321 is 1232020311131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999928001296 + 311202201025 = 999964^2 + 557855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311130202321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311130202293 and 1311130202302.

It is not a weakly prime, because it can be changed into another prime (1311130202329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655565101160 + 655565101161.

It is an arithmetic number, because the mean of its divisors is an integer number (655565101161).

Almost surely, 2^{1311130202321} is an apocalyptic number.

It is an amenable number.

1311130202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311130202321 is an equidigital number, since it uses as much as digits as its factorization.

1311130202321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1311130202321 its reverse (1232020311131), we get a palindrome (2543150513452).

The spelling of 1311130202321 in words is "one trillion, three hundred eleven billion, one hundred thirty million, two hundred two thousand, three hundred twenty-one".