12315131289 has 6 divisors (see below), whose sum is σ = 17788522986. Its totient is φ = 8210087520.

The previous prime is 12315131287. The next prime is 12315131291. The reversal of 12315131289 is 98213151321.

12315131289 is a `hidden beast` number, since 12 + 3 + 1 + 513 + 128 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (12315131287) and next prime (12315131291).

It can be written as a sum of positive squares in only one way, i.e., 6446805264 + 5868326025 = 80292^2 + 76605^2 .

It is not a de Polignac number, because 12315131289 - 2¹ = 12315131287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12315131287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684173952 + ... + 684173969.

It is an arithmetic number, because the mean of its divisors is an integer number (2964753831).

Almost surely, 2^12315131289 is an apocalyptic number.

It is an amenable number.

12315131289 is a deficient number, since it is larger than the sum of its proper divisors (5473391697).

12315131289 is a wasteful number, since it uses less digits than its factorization.

12315131289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368347927 (or 1368347924 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The spelling of 12315131289 in words is "twelve billion, three hundred fifteen million, one hundred thirty-one thousand, two hundred eighty-nine".