1311132113 has 2 divisors, whose sum is σ = 1311132114. Its totient is φ = 1311132112.

The previous prime is 1311132103. The next prime is 1311132131. The reversal of 1311132113 is 3112311131.

Together with next prime (1311132131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1047946384 + 263185729 = 32372^2 + 16223^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311132113 - 2¹⁰ = 1311131089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311132091 and 1311132100.

It is not a weakly prime, because it can be changed into another prime (1311132103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655566056 + 655566057.

It is an arithmetic number, because the mean of its divisors is an integer number (655566057).

Almost surely, 2^1311132113 is an apocalyptic number.

It is an amenable number.

1311132113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311132113 is an equidigital number, since it uses as much as digits as its factorization.

1311132113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 17.

The square root of 1311132113 is about 36209.5583099270. The cubic root of 1311132113 is about 1094.4992916597.

Adding to 1311132113 its reverse (3112311131), we get a palindrome (4423443244).

The spelling of 1311132113 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, one hundred thirteen".