1111311133 has 2 divisors, whose sum is σ = 1111311134. Its totient is φ = 1111311132.

The previous prime is 1111311073. The next prime is 1111311137. The reversal of 1111311133 is 3311131111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617671609 + 493639524 = 24853^2 + 22218^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111311133 - 2²¹ = 1109213981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111311137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555655566 + 555655567.

It is an arithmetic number, because the mean of its divisors is an integer number (555655567).

Almost surely, 2^1111311133 is an apocalyptic number.

It is an amenable number.

1111311133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111311133 is an equidigital number, since it uses as much as digits as its factorization.

1111311133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27, while the sum is 16.

The square root of 1111311133 is about 33336.3335266493. Note that the first 3 decimals coincide. The cubic root of 1111311133 is about 1035.8063163737.

Adding to 1111311133 its reverse (3311131111), we get a palindrome (4422442244).

The spelling of 1111311133 in words is "one billion, one hundred eleven million, three hundred eleven thousand, one hundred thirty-three".