13431443212 has 24 divisors (see below), whose sum is σ = 25651720080. Its totient is φ = 6102850560.

The previous prime is 13431443153. The next prime is 13431443213. The reversal of 13431443212 is 21234413431.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13431443213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59464 + ... + 174352.

It is an arithmetic number, because the mean of its divisors is an integer number (1068821670).

Almost surely, 2^13431443212 is an apocalyptic number.

It is an amenable number.

13431443212 is a deficient number, since it is larger than the sum of its proper divisors (12220276868).

13431443212 is a wasteful number, since it uses less digits than its factorization.

13431443212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117561 (or 117559 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

Adding to 13431443212 its reverse (21234413431), we get a palindrome (34665856643).

The spelling of 13431443212 in words is "thirteen billion, four hundred thirty-one million, four hundred forty-three thousand, two hundred twelve".