12031322397 has 8 divisors (see below), whose sum is σ = 16052098944. Its totient is φ = 8015713728.

The previous prime is 12031322393. The next prime is 12031322417. The reversal of 12031322397 is 79322313021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12031322397 - 2² = 12031322393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031322393) 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 7 ways as a sum of consecutive naturals, for example, 1286533 + ... + 1295850.

It is an arithmetic number, because the mean of its divisors is an integer number (2006512368).

Almost surely, 2^12031322397 is an apocalyptic number.

It is an amenable number.

12031322397 is a deficient number, since it is larger than the sum of its proper divisors (4020776547).

12031322397 is a wasteful number, since it uses less digits than its factorization.

12031322397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583939.

The product of its (nonzero) digits is 13608, while the sum is 33.

The spelling of 12031322397 in words is "twelve billion, thirty-one million, three hundred twenty-two thousand, three hundred ninety-seven".