12308571137 has 4 divisors (see below), whose sum is σ = 12309169236. Its totient is φ = 12307973040.

The previous prime is 12308571109. The next prime is 12308571211. The reversal of 12308571137 is 73117580321.

It is a Cunningham number, because it is equal to 110944²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73117580321 = 1493 ⋅48973597.

It can be written as a sum of positive squares in 2 ways, for example, as 12250947856 + 57623281 = 110684^2 + 7591^2 .

It is a cyclic number.

It is not a de Polignac number, because 12308571137 - 2¹² = 12308567041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12308571137.

It is not an unprimeable number, because it can be changed into a prime (12308571637) 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, 267038 + ... + 309719.

It is an arithmetic number, because the mean of its divisors is an integer number (3077292309).

Almost surely, 2^12308571137 is an apocalyptic number.

It is an amenable number.

12308571137 is a deficient number, since it is larger than the sum of its proper divisors (598099).

12308571137 is an equidigital number, since it uses as much as digits as its factorization.

12308571137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598098.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 12308571137 in words is "twelve billion, three hundred eight million, five hundred seventy-one thousand, one hundred thirty-seven".