12147247131 has 8 divisors (see below), whose sum is σ = 16201667664. Its totient is φ = 8095495680.

The previous prime is 12147247129. The next prime is 12147247159. The reversal of 12147247131 is 13174274121.

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

It is not a de Polignac number, because 12147247131 - 2¹ = 12147247129 is a prime.

It is a super-2 number, since 2×12147247131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12147247092 and 12147247101.

It is not an unprimeable number, because it can be changed into a prime (12147247171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656626 + ... + 674871.

It is an arithmetic number, because the mean of its divisors is an integer number (2025208458).

Almost surely, 2^12147247131 is an apocalyptic number.

12147247131 is a deficient number, since it is larger than the sum of its proper divisors (4054420533).

12147247131 is a wasteful number, since it uses less digits than its factorization.

12147247131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334541.

The product of its digits is 9408, while the sum is 33.

The spelling of 12147247131 in words is "twelve billion, one hundred forty-seven million, two hundred forty-seven thousand, one hundred thirty-one".