12315123130 has 32 divisors (see below), whose sum is σ = 22433274000. Its totient is φ = 4867011072.

The previous prime is 12315123127. The next prime is 12315123131. The reversal of 12315123130 is 3132151321.

It can be written as a sum of positive squares in 8 ways, for example, as 1357848801 + 10957274329 = 36849^2 + 104677^2 .

It is not an unprimeable number, because it can be changed into a prime (12315123131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374144 + ... + 1383076.

Almost surely, 2^12315123130 is an apocalyptic number.

12315123130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12315123130 is a deficient number, since it is larger than the sum of its proper divisors (10118150870).

12315123130 is a wasteful number, since it uses less digits than its factorization.

12315123130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10578.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 12315123130 its reverse (3132151321), we get a palindrome (15447274451).

The spelling of 12315123130 in words is "twelve billion, three hundred fifteen million, one hundred twenty-three thousand, one hundred thirty".