11001131 has 2 divisors, whose sum is σ = 11001132. Its totient is φ = 11001130.

The previous prime is 11001103. The next prime is 11001139. The reversal of 11001131 is 13110011.

It is an a-pointer prime, because the next prime (11001139) can be obtained adding 11001131 to its sum of digits (8).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001131 is a prime.

It is a super-2 number, since 2×11001131² = 242049766558322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11001139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500565 + 5500566.

It is an arithmetic number, because the mean of its divisors is an integer number (5500566).

Almost surely, 2^11001131 is an apocalyptic number.

11001131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001131 is an equidigital number, since it uses as much as digits as its factorization.

11001131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3, while the sum is 8.

The square root of 11001131 is about 3316.7952906382. The cubic root of 11001131 is about 222.4056309820.

Adding to 11001131 its reverse (13110011), we get a palindrome (24111142).

The spelling of 11001131 in words is "eleven million, one thousand, one hundred thirty-one".