12015342312 has 32 divisors (see below), whose sum is σ = 30057619200. Its totient is φ = 4002545664.

The previous prime is 12015342211. The next prime is 12015342337. The reversal of 12015342312 is 21324351021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122137 + ... + 197352.

It is an arithmetic number, because the mean of its divisors is an integer number (939300600).

Almost surely, 2^12015342312 is an apocalyptic number.

12015342312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12015342312 is an abundant number, since it is smaller than the sum of its proper divisors (18042276888).

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

12015342312 is a wasteful number, since it uses less digits than its factorization.

12015342312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321065 (or 321061 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 12015342312 its reverse (21324351021), we get a palindrome (33339693333).

The spelling of 12015342312 in words is "twelve billion, fifteen million, three hundred forty-two thousand, three hundred twelve".