13112031 has 12 divisors (see below), whose sum is σ = 18109832. Its totient is φ = 8438304.

The previous prime is 13111961. The next prime is 13112051. The reversal of 13112031 is 13021131.

13112031 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 13112031 - 2⁹ = 13111519 is a prime.

It is a super-2 number, since 2×13112031² = 343850713889922, 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 = 13111998 and 13112016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76 + ... + 5121.

Almost surely, 2^13112031 is an apocalyptic number.

13112031 is a deficient number, since it is larger than the sum of its proper divisors (4997801).

13112031 is an equidigital number, since it uses as much as digits as its factorization.

13112031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258 (or 5229 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 13112031 is about 3621.0538521265. The cubic root of 13112031 is about 235.8069797314.

Adding to 13112031 its reverse (13021131), we get a palindrome (26133162).

The spelling of 13112031 in words is "thirteen million, one hundred twelve thousand, thirty-one".