11061181431 has 6 divisors (see below), whose sum is σ = 15977262080. Its totient is φ = 7374120948.

The previous prime is 11061181403. The next prime is 11061181447. The reversal of 11061181431 is 13418116011.

11061181431 is a `hidden beast` number, since 1 + 1 + 0 + 611 + 8 + 1 + 43 + 1 = 666.

It is not a de Polignac number, because 11061181431 - 2⁵ = 11061181399 is a prime.

It is a super-2 number, since 2×11061181431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11061181395 and 11061181404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11061181031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 614510071 + ... + 614510088.

Almost surely, 2^11061181431 is an apocalyptic number.

11061181431 is a deficient number, since it is larger than the sum of its proper divisors (4916080649).

11061181431 is a wasteful number, since it uses less digits than its factorization.

11061181431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229020165 (or 1229020162 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

Adding to 11061181431 its reverse (13418116011), we get a palindrome (24479297442).

The spelling of 11061181431 in words is "eleven billion, sixty-one million, one hundred eighty-one thousand, four hundred thirty-one".