1133133111 has 64 divisors (see below), whose sum is σ = 1972961280. Its totient is φ = 635580000.

The previous prime is 1133133109. The next prime is 1133133121. The reversal of 1133133111 is 1113313311.

1133133111 is a `hidden beast` number, since 1 + 1 + 331 + 331 + 1 + 1 = 666.

It is not a de Polignac number, because 1133133111 - 2¹ = 1133133109 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133133121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 209086 + ... + 214436.

It is an arithmetic number, because the mean of its divisors is an integer number (30827520).

Almost surely, 2^1133133111 is an apocalyptic number.

1133133111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1133133111 is a deficient number, since it is larger than the sum of its proper divisors (839828169).

1133133111 is a wasteful number, since it uses less digits than its factorization.

1133133111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425 (or 5419 counting only the distinct ones).

The product of its digits is 81, while the sum is 18.

The square root of 1133133111 is about 33662.0425850839. The cubic root of 1133133111 is about 1042.5422000411.

Adding to 1133133111 its reverse (1113313311), we get a palindrome (2246446422).

The spelling of 1133133111 in words is "one billion, one hundred thirty-three million, one hundred thirty-three thousand, one hundred eleven".