11125503031 has 4 divisors (see below), whose sum is σ = 11143477000. Its totient is φ = 11107529064.

The previous prime is 11125503017. The next prime is 11125503043. The reversal of 11125503031 is 13030552111.

11125503031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13030552111 = 1753 ⋅7433287.

It is a cyclic number.

It is not a de Polignac number, because 11125503031 - 2¹⁵ = 11125470263 is a prime.

It is a super-2 number, since 2×11125503031² (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 = 11125502993 and 11125503011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11125543031) 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 3 ways as a sum of consecutive naturals, for example, 8986056 + ... + 8987293.

It is an arithmetic number, because the mean of its divisors is an integer number (2785869250).

Almost surely, 2^11125503031 is an apocalyptic number.

11125503031 is a deficient number, since it is larger than the sum of its proper divisors (17973969).

11125503031 is an equidigital number, since it uses as much as digits as its factorization.

11125503031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17973968.

The product of its (nonzero) digits is 450, while the sum is 22.

The spelling of 11125503031 in words is "eleven billion, one hundred twenty-five million, five hundred three thousand, thirty-one".