12312104456 has 8 divisors (see below), whose sum is σ = 23085195870. Its totient is φ = 6156052224.

The previous prime is 12312104437. The next prime is 12312104477. The reversal of 12312104456 is 65440121321.

It can be written as a sum of positive squares in only one way, i.e., 11249996356 + 1062108100 = 106066^2 + 32590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12312104456² (a number of 21 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 769506521 + ... + 769506536.

Almost surely, 2^12312104456 is an apocalyptic number.

It is an amenable number.

12312104456 is a deficient number, since it is larger than the sum of its proper divisors (10773091414).

12312104456 is a wasteful number, since it uses less digits than its factorization.

12312104456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539013063 (or 1539013059 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 12312104456 its reverse (65440121321), we get a palindrome (77752225777).

The spelling of 12312104456 in words is "twelve billion, three hundred twelve million, one hundred four thousand, four hundred fifty-six".