431422144220 has 24 divisors (see below), whose sum is σ = 905998884000. Its totient is φ = 172566499392.

The previous prime is 431422144189. The next prime is 431422144267. The reversal of 431422144220 is 22441224134.

It is a happy number.

It is a super-2 number, since 2×431422144220² (a number of 24 digits) contains 22 as substring.

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, 2619881 + ... + 2779679.

It is an arithmetic number, because the mean of its divisors is an integer number (37749953500).

Almost surely, 2^431422144220 is an apocalyptic number.

It is an amenable number.

431422144220 is an abundant number, since it is smaller than the sum of its proper divisors (474576739780).

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

431422144220 is a wasteful number, since it uses less digits than its factorization.

431422144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294797 (or 294795 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 431422144220 its reverse (22441224134), we get a palindrome (453863368354).

The spelling of 431422144220 in words is "four hundred thirty-one billion, four hundred twenty-two million, one hundred forty-four thousand, two hundred twenty".