11125031 has 4 divisors (see below), whose sum is σ = 11608752. Its totient is φ = 10641312.

The previous prime is 11125019. The next prime is 11125091. The reversal of 11125031 is 13052111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11125031 - 2²² = 6930727 is a prime.

It is a super-2 number, since 2×11125031² = 247532629501922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11124997 and 11125015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11125091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241826 + ... + 241871.

It is an arithmetic number, because the mean of its divisors is an integer number (2902188).

Almost surely, 2^11125031 is an apocalyptic number.

11125031 is a deficient number, since it is larger than the sum of its proper divisors (483721).

11125031 is an equidigital number, since it uses as much as digits as its factorization.

11125031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483720.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11125031 is about 3335.4206631248. The cubic root of 11125031 is about 223.2374621305.

Adding to 11125031 its reverse (13052111), we get a palindrome (24177142).

The spelling of 11125031 in words is "eleven million, one hundred twenty-five thousand, thirty-one".