12031322407 has 4 divisors (see below), whose sum is σ = 12956808760. Its totient is φ = 11105836056.

The previous prime is 12031322393. The next prime is 12031322417. The reversal of 12031322407 is 70422313021.

It is a happy number.

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-12031322407 is a prime.

It is a super-2 number, since 2×12031322407² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031322417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462743157 + ... + 462743182.

It is an arithmetic number, because the mean of its divisors is an integer number (3239202190).

Almost surely, 2^12031322407 is an apocalyptic number.

12031322407 is a deficient number, since it is larger than the sum of its proper divisors (925486353).

12031322407 is an equidigital number, since it uses as much as digits as its factorization.

12031322407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925486352.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 12031322407 its reverse (70422313021), we get a palindrome (82453635428).

The spelling of 12031322407 in words is "twelve billion, thirty-one million, three hundred twenty-two thousand, four hundred seven".