1431321321222 has 128 divisors (see below), whose sum is σ = 3506839902720. Its totient is φ = 429944215680.

The previous prime is 1431321321217. The next prime is 1431321321247. The reversal of 1431321321222 is 2221231231341.

1431321321222 is a `hidden beast` number, since 1 + 4 + 313 + 2 + 1 + 321 + 2 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64617153 + ... + 64639299.

It is an arithmetic number, because the mean of its divisors is an integer number (27397186740).

Almost surely, 2^{1431321321222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431321321222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1753419951360).

1431321321222 is an abundant number, since it is smaller than the sum of its proper divisors (2075518581498).

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

1431321321222 is a wasteful number, since it uses less digits than its factorization.

1431321321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24355 (or 24349 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 1431321321222 its reverse (2221231231341), we get a palindrome (3652552552563).

The spelling of 1431321321222 in words is "one trillion, four hundred thirty-one billion, three hundred twenty-one million, three hundred twenty-one thousand, two hundred twenty-two".