13031223212 has 24 divisors (see below), whose sum is σ = 26320496160. Its totient is φ = 5529513600.

The previous prime is 13031223199. The next prime is 13031223217. The reversal of 13031223212 is 21232213031.

13031223212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13031223217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2301137 + ... + 2306792.

It is an arithmetic number, because the mean of its divisors is an integer number (1096687340).

Almost surely, 2^13031223212 is an apocalyptic number.

It is an amenable number.

13031223212 is an abundant number, since it is smaller than the sum of its proper divisors (13289272948).

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

13031223212 is a wasteful number, since it uses less digits than its factorization.

13031223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608041 (or 4608039 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13031223212 its reverse (21232213031), we get a palindrome (34263436243).

The spelling of 13031223212 in words is "thirteen billion, thirty-one million, two hundred twenty-three thousand, two hundred twelve".