11201611131 has 6 divisors (see below), whose sum is σ = 16180104980. Its totient is φ = 7467740748.

The previous prime is 11201611123. The next prime is 11201611159. The reversal of 11201611131 is 13111610211.

11201611131 is a `hidden beast` number, since 1 + 1 + 20 + 1 + 611 + 1 + 31 = 666.

It is not a de Polignac number, because 11201611131 - 2³ = 11201611123 is a prime.

It is a super-2 number, since 2×11201611131² (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 (11201611171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622311721 + ... + 622311738.

Almost surely, 2^11201611131 is an apocalyptic number.

11201611131 is a deficient number, since it is larger than the sum of its proper divisors (4978493849).

11201611131 is a wasteful number, since it uses less digits than its factorization.

11201611131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244623465 (or 1244623462 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 11201611131 in words is "eleven billion, two hundred one million, six hundred eleven thousand, one hundred thirty-one".