12147717931 has 8 divisors (see below), whose sum is σ = 12863700720. Its totient is φ = 11431891968.

The previous prime is 12147717929. The next prime is 12147718003. The reversal of 12147717931 is 13971774121.

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

It is a cyclic number.

It is not a de Polignac number, because 12147717931 - 2¹ = 12147717929 is a prime.

It is a super-2 number, since 2×12147717931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12147777931) 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, 145060 + ... + 212926.

It is an arithmetic number, because the mean of its divisors is an integer number (1607962590).

Almost surely, 2^12147717931 is an apocalyptic number.

12147717931 is a deficient number, since it is larger than the sum of its proper divisors (715982789).

12147717931 is a wasteful number, since it uses less digits than its factorization.

12147717931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78413.

The product of its digits is 74088, while the sum is 43.

The spelling of 12147717931 in words is "twelve billion, one hundred forty-seven million, seven hundred seventeen thousand, nine hundred thirty-one".