1331133113 has 2 divisors, whose sum is σ = 1331133114. Its totient is φ = 1331133112.

The previous prime is 1331133091. The next prime is 1331133151. The reversal of 1331133113 is 3113311331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129833769 + 201299344 = 33613^2 + 14188^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331133113 - 2⁶ = 1331133049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331133913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665566556 + 665566557.

It is an arithmetic number, because the mean of its divisors is an integer number (665566557).

Almost surely, 2^1331133113 is an apocalyptic number.

It is an amenable number.

1331133113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331133113 is an equidigital number, since it uses as much as digits as its factorization.

1331133113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243, while the sum is 20.

The square root of 1331133113 is about 36484.6969700997. The cubic root of 1331133113 is about 1100.0366690255.

Adding to 1331133113 its reverse (3113311331), we get a palindrome (4444444444).

The spelling of 1331133113 in words is "one billion, three hundred thirty-one million, one hundred thirty-three thousand, one hundred thirteen".