431221331422 has 16 divisors (see below), whose sum is σ = 741330731232. Its totient is φ = 184285601280.

The previous prime is 431221331381. The next prime is 431221331447. The reversal of 431221331422 is 224133122134.

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, 43623279 + ... + 43633162.

It is an arithmetic number, because the mean of its divisors is an integer number (46333170702).

Almost surely, 2^431221331422 is an apocalyptic number.

431221331422 is a deficient number, since it is larger than the sum of its proper divisors (310109399810).

431221331422 is a wasteful number, since it uses less digits than its factorization.

431221331422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87256803.

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

Adding to 431221331422 its reverse (224133122134), we get a palindrome (655354453556).

The spelling of 431221331422 in words is "four hundred thirty-one billion, two hundred twenty-one million, three hundred thirty-one thousand, four hundred twenty-two".