12751031 has 4 divisors (see below), whose sum is σ = 12784200. Its totient is φ = 12717864.

The previous prime is 12751009. The next prime is 12751043. The reversal of 12751031 is 13015721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12751031 is a prime.

It is a super-2 number, since 2×12751031² = 325177583125922, 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 = 12750994 and 12751012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12751231) 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, 16001 + ... + 16778.

It is an arithmetic number, because the mean of its divisors is an integer number (3196050).

Almost surely, 2^12751031 is an apocalyptic number.

12751031 is a deficient number, since it is larger than the sum of its proper divisors (33169).

12751031 is an equidigital number, since it uses as much as digits as its factorization.

12751031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33168.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 12751031 is about 3570.8585802297. The cubic root of 12751031 is about 233.6227332035.

Adding to 12751031 its reverse (13015721), we get a palindrome (25766752).

The spelling of 12751031 in words is "twelve million, seven hundred fifty-one thousand, thirty-one".