12431031 has 16 divisors (see below), whose sum is σ = 17203200. Its totient is φ = 7976160.

The previous prime is 12430963. The next prime is 12431033. The reversal of 12431031 is 13013421.

It is not a de Polignac number, because 12431031 - 2⁷ = 12430903 is a prime.

It is a super-2 number, since 2×12431031² = 309061063445922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12431031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32266 + ... + 32648.

It is an arithmetic number, because the mean of its divisors is an integer number (1075200).

Almost surely, 2^12431031 is an apocalyptic number.

12431031 is a deficient number, since it is larger than the sum of its proper divisors (4772169).

12431031 is a wasteful number, since it uses less digits than its factorization.

12431031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12431031 is about 3525.7667251252. The cubic root of 12431031 is about 231.6518199228.

Adding to 12431031 its reverse (13013421), we get a palindrome (25444452).

The spelling of 12431031 in words is "twelve million, four hundred thirty-one thousand, thirty-one".