13320012312 has 72 divisors (see below), whose sum is σ = 38321981100. Its totient is φ = 4178820864.

The previous prime is 13320012271. The next prime is 13320012317. The reversal of 13320012312 is 21321002331.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320012317) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 299262 + ... + 340877.

Almost surely, 2^13320012312 is an apocalyptic number.

13320012312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13320012312 is an abundant number, since it is smaller than the sum of its proper divisors (25001968788).

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

13320012312 is a wasteful number, since it uses less digits than its factorization.

13320012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640185 (or 640161 counting only the distinct ones).

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

Adding to 13320012312 its reverse (21321002331), we get a palindrome (34641014643).

The spelling of 13320012312 in words is "thirteen billion, three hundred twenty million, twelve thousand, three hundred twelve".