12531113 has 12 divisors (see below), whose sum is σ = 15212160. Its totient is φ = 10273032.

The previous prime is 12531097. The next prime is 12531121. The reversal of 12531113 is 31113521.

It is not a de Polignac number, because 12531113 - 2⁴ = 12531097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12531091 and 12531100.

It is not an unprimeable number, because it can be changed into a prime (12531133) 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, 4433 + ... + 6686.

It is an arithmetic number, because the mean of its divisors is an integer number (1267680).

Almost surely, 2^12531113 is an apocalyptic number.

It is an amenable number.

12531113 is a deficient number, since it is larger than the sum of its proper divisors (2681047).

12531113 is a wasteful number, since it uses less digits than its factorization.

12531113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11156 (or 11149 counting only the distinct ones).

The product of its digits is 90, while the sum is 17.

The square root of 12531113 is about 3539.9312140210. The cubic root of 12531113 is about 232.2718338161.

Adding to 12531113 its reverse (31113521), we get a palindrome (43644634).

The spelling of 12531113 in words is "twelve million, five hundred thirty-one thousand, one hundred thirteen".