1431221123312 has 40 divisors (see below), whose sum is σ = 2872704126240. Its totient is φ = 689948537600.

The previous prime is 1431221123287. The next prime is 1431221123327. The reversal of 1431221123312 is 2133211221341.

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, 1874828 + ... + 2525355.

It is an arithmetic number, because the mean of its divisors is an integer number (71817603156).

Almost surely, 2^{1431221123312} is an apocalyptic number.

It is an amenable number.

1431221123312 is an abundant number, since it is smaller than the sum of its proper divisors (1441483002928).

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

1431221123312 is a wasteful number, since it uses less digits than its factorization.

1431221123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400921 (or 4400915 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

Adding to 1431221123312 its reverse (2133211221341), we get a palindrome (3564432344653).

The spelling of 1431221123312 in words is "one trillion, four hundred thirty-one billion, two hundred twenty-one million, one hundred twenty-three thousand, three hundred twelve".