1135111331 has 2 divisors, whose sum is σ = 1135111332. Its totient is φ = 1135111330.

The previous prime is 1135111309. The next prime is 1135111333. The reversal of 1135111331 is 1331115311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135111331 is a prime.

It is a super-2 number, since 2×1135111331² = 2576955467529183122, which contains 22 as substring.

Together with 1135111333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1135111333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567555665 + 567555666.

It is an arithmetic number, because the mean of its divisors is an integer number (567555666).

Almost surely, 2^1135111331 is an apocalyptic number.

1135111331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135111331 is an equidigital number, since it uses as much as digits as its factorization.

1135111331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135, while the sum is 20.

The square root of 1135111331 is about 33691.4133125935. The cubic root of 1135111331 is about 1043.1485362281.

Adding to 1135111331 its reverse (1331115311), we get a palindrome (2466226642).

The spelling of 1135111331 in words is "one billion, one hundred thirty-five million, one hundred eleven thousand, three hundred thirty-one".