12481031 has 4 divisors (see below), whose sum is σ = 12491952. Its totient is φ = 12470112.

The previous prime is 12480997. The next prime is 12481039. The reversal of 12481031 is 13018421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12481031 is a prime.

It is a super-2 number, since 2×12481031² = 311552269645922, 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 = 12480994 and 12481012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12481039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3515 + ... + 6108.

It is an arithmetic number, because the mean of its divisors is an integer number (3122988).

Almost surely, 2^12481031 is an apocalyptic number.

12481031 is a deficient number, since it is larger than the sum of its proper divisors (10921).

12481031 is an equidigital number, since it uses as much as digits as its factorization.

12481031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10920.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12481031 is about 3532.8502657203. The cubic root of 12481031 is about 231.9619871826.

Adding to 12481031 its reverse (13018421), we get a palindrome (25499452).

The spelling of 12481031 in words is "twelve million, four hundred eighty-one thousand, thirty-one".