4431231223412 has 72 divisors (see below), whose sum is σ = 9000228195840. Its totient is φ = 1870021742400.

The previous prime is 4431231223403. The next prime is 4431231223453. The reversal of 4431231223412 is 2143221321344.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115863389 + ... + 115901627.

Almost surely, 2^{4431231223412} is an apocalyptic number.

It is an amenable number.

4431231223412 is an abundant number, since it is smaller than the sum of its proper divisors (4568996972428).

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

4431231223412 is a wasteful number, since it uses less digits than its factorization.

4431231223412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39213 (or 39140 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

Adding to 4431231223412 its reverse (2143221321344), we get a palindrome (6574452544756).

The spelling of 4431231223412 in words is "four trillion, four hundred thirty-one billion, two hundred thirty-one million, two hundred twenty-three thousand, four hundred twelve".