11133001331 has 4 divisors (see below), whose sum is σ = 11137013112. Its totient is φ = 11128989552.

The previous prime is 11133001307. The next prime is 11133001381. The reversal of 11133001331 is 13310033111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11133001331 is a prime.

It is a super-2 number, since 2×11133001331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11133001381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001725 + ... + 2007278.

It is an arithmetic number, because the mean of its divisors is an integer number (2784253278).

Almost surely, 2^11133001331 is an apocalyptic number.

11133001331 is a deficient number, since it is larger than the sum of its proper divisors (4011781).

11133001331 is an equidigital number, since it uses as much as digits as its factorization.

11133001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011780.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 11133001331 its reverse (13310033111), we get a palindrome (24443034442).

The spelling of 11133001331 in words is "eleven billion, one hundred thirty-three million, one thousand, three hundred thirty-one".