12315123106 has 64 divisors (see below), whose sum is σ = 23067233280. Its totient is φ = 4847480640.

The previous prime is 12315123083. The next prime is 12315123109. The reversal of 12315123106 is 60132151321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12315123109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548701 + ... + 570703.

It is an arithmetic number, because the mean of its divisors is an integer number (360425520).

Almost surely, 2^12315123106 is an apocalyptic number.

12315123106 is a deficient number, since it is larger than the sum of its proper divisors (10752110174).

12315123106 is a wasteful number, since it uses less digits than its factorization.

12315123106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22151.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 12315123106 its reverse (60132151321), we get a palindrome (72447274427).

The spelling of 12315123106 in words is "twelve billion, three hundred fifteen million, one hundred twenty-three thousand, one hundred six".