12131010312 has 16 divisors (see below), whose sum is σ = 30327525840. Its totient is φ = 4043670096.

The previous prime is 12131010301. The next prime is 12131010319. The reversal of 12131010312 is 21301013121.

It is a happy number.

It is a super-2 number, since 2×12131010312² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12131010291 and 12131010300.

It is not an unprimeable number, because it can be changed into a prime (12131010319) 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, 252729358 + ... + 252729405.

It is an arithmetic number, because the mean of its divisors is an integer number (1895470365).

Almost surely, 2^12131010312 is an apocalyptic number.

12131010312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12131010312 is an abundant number, since it is smaller than the sum of its proper divisors (18196515528).

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

12131010312 is a wasteful number, since it uses less digits than its factorization.

12131010312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505458772 (or 505458768 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12131010312 its reverse (21301013121), we get a palindrome (33432023433).

The spelling of 12131010312 in words is "twelve billion, one hundred thirty-one million, ten thousand, three hundred twelve".