12312230032 has 20 divisors (see below), whose sum is σ = 23988219120. Its totient is φ = 6121721888.

The previous prime is 12312229999. The next prime is 12312230081. The reversal of 12312230032 is 23003221321.

It is a junction number, because it is equal to n+sod(n) for n = 12312229991 and 12312230009.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146618 + ... + 2152345.

It is an arithmetic number, because the mean of its divisors is an integer number (1199410956).

Almost surely, 2^12312230032 is an apocalyptic number.

It is an amenable number.

12312230032 is a deficient number, since it is larger than the sum of its proper divisors (11675989088).

12312230032 is a wasteful number, since it uses less digits than its factorization.

12312230032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299150 (or 4299144 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12312230032 its reverse (23003221321), we get a palindrome (35315451353).

The spelling of 12312230032 in words is "twelve billion, three hundred twelve million, two hundred thirty thousand, thirty-two".