11125133631 has 12 divisors (see below), whose sum is σ = 16915408120. Its totient is φ = 7026400080.

The previous prime is 11125133629. The next prime is 11125133647. The reversal of 11125133631 is 13633152111.

It is a happy number.

11125133631 is a `hidden beast` number, since 1 + 1 + 1 + 25 + 1 + 3 + 3 + 631 = 666.

11125133631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11125133631 - 2¹ = 11125133629 is a prime.

It is a super-2 number, since 2×11125133631² (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 = 11125133595 and 11125133604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11125133431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32529460 + ... + 32529801.

Almost surely, 2^11125133631 is an apocalyptic number.

11125133631 is a deficient number, since it is larger than the sum of its proper divisors (5790274489).

11125133631 is a wasteful number, since it uses less digits than its factorization.

11125133631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65059286 (or 65059283 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

Adding to 11125133631 its reverse (13633152111), we get a palindrome (24758285742).

The spelling of 11125133631 in words is "eleven billion, one hundred twenty-five million, one hundred thirty-three thousand, six hundred thirty-one".