12312404432 has 10 divisors (see below), whose sum is σ = 23855283618. Its totient is φ = 6156202208.

The previous prime is 12312404431. The next prime is 12312404449. The reversal of 12312404432 is 23440421321.

It can be written as a sum of positive squares in only one way, i.e., 11647589776 + 664814656 = 107924^2 + 25784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312404431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384762623 + ... + 384762654.

Almost surely, 2^12312404432 is an apocalyptic number.

It is an amenable number.

12312404432 is a deficient number, since it is larger than the sum of its proper divisors (11542879186).

12312404432 is an equidigital number, since it uses as much as digits as its factorization.

12312404432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769525285 (or 769525279 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12312404432 its reverse (23440421321), we get a palindrome (35752825753).

The spelling of 12312404432 in words is "twelve billion, three hundred twelve million, four hundred four thousand, four hundred thirty-two".