1311455113 has 2 divisors, whose sum is σ = 1311455114. Its totient is φ = 1311455112.

The previous prime is 1311455077. The next prime is 1311455141. The reversal of 1311455113 is 3115541131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 922458384 + 388996729 = 30372^2 + 19723^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311455113 - 2⁹ = 1311454601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311459113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655727556 + 655727557.

It is an arithmetic number, because the mean of its divisors is an integer number (655727557).

Almost surely, 2^1311455113 is an apocalyptic number.

It is an amenable number.

1311455113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311455113 is an equidigital number, since it uses as much as digits as its factorization.

1311455113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 25.

The square root of 1311455113 is about 36214.0181835708. The cubic root of 1311455113 is about 1094.5891616383.

Adding to 1311455113 its reverse (3115541131), we get a palindrome (4426996244).

The spelling of 1311455113 in words is "one billion, three hundred eleven million, four hundred fifty-five thousand, one hundred thirteen".