12127347131 has 4 divisors (see below), whose sum is σ = 12139226064. Its totient is φ = 12115468200.

The previous prime is 12127347119. The next prime is 12127347187. The reversal of 12127347131 is 13174372121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13174372121 = 43 ⋅306380747.

It is a cyclic number.

It is not a de Polignac number, because 12127347131 - 2²² = 12123152827 is a prime.

It is a super-2 number, since 2×12127347131² (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 (12127347101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5937935 + ... + 5939976.

It is an arithmetic number, because the mean of its divisors is an integer number (3034806516).

Almost surely, 2^12127347131 is an apocalyptic number.

12127347131 is a deficient number, since it is larger than the sum of its proper divisors (11878933).

12127347131 is a wasteful number, since it uses less digits than its factorization.

12127347131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11878932.

The product of its digits is 7056, while the sum is 32.

The spelling of 12127347131 in words is "twelve billion, one hundred twenty-seven million, three hundred forty-seven thousand, one hundred thirty-one".