12323200440 has 32 divisors (see below), whose sum is σ = 36969601680. Its totient is φ = 3286186752.

The previous prime is 12323200433. The next prime is 12323200457. The reversal of 12323200440 is 4400232321.

It is a super-2 number, since 2×12323200440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 51346549 + ... + 51346788.

Almost surely, 2^12323200440 is an apocalyptic number.

12323200440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12323200440 is an abundant number, since it is smaller than the sum of its proper divisors (24646401240).

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

12323200440 is a wasteful number, since it uses less digits than its factorization.

12323200440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102693351 (or 102693347 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 12323200440 its reverse (4400232321), we get a palindrome (16723432761).

The spelling of 12323200440 in words is "twelve billion, three hundred twenty-three million, two hundred thousand, four hundred forty".