12312036 has 36 divisors (see below), whose sum is σ = 33952464. Its totient is φ = 3730800.

The previous prime is 12312031. The next prime is 12312043. The reversal of 12312036 is 63021321.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12312031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15150 + ... + 15941.

It is an arithmetic number, because the mean of its divisors is an integer number (943124).

Almost surely, 2^12312036 is an apocalyptic number.

It is an amenable number.

12312036 is an abundant number, since it is smaller than the sum of its proper divisors (21640428).

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

12312036 is a wasteful number, since it uses less digits than its factorization.

12312036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31112 (or 31107 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12312036 is about 3508.8510940192. The cubic root of 12312036 is about 230.9102929349.

Adding to 12312036 its reverse (63021321), we get a palindrome (75333357).

The spelling of 12312036 in words is "twelve million, three hundred twelve thousand, thirty-six".