12315123132 has 24 divisors (see below), whose sum is σ = 30945694416. Its totient is φ = 3789268608.

The previous prime is 12315123131. The next prime is 12315123133. The reversal of 12315123132 is 23132151321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12315123131) and next prime (12315123133).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 39471393 + ... + 39471704.

It is an arithmetic number, because the mean of its divisors is an integer number (1289403934).

Almost surely, 2^12315123132 is an apocalyptic number.

12315123132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12315123132 is an abundant number, since it is smaller than the sum of its proper divisors (18630571284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12315123132 is a wasteful number, since it uses less digits than its factorization.

12315123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78943117 (or 78943115 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

Adding to 12315123132 its reverse (23132151321), we get a palindrome (35447274453).

The spelling of 12315123132 in words is "twelve billion, three hundred fifteen million, one hundred twenty-three thousand, one hundred thirty-two".