431201243220 has 96 divisors (see below), whose sum is σ = 1374390097920. Its totient is φ = 99988690560.

The previous prime is 431201243219. The next prime is 431201243267. The reversal of 431201243220 is 22342102134.

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 31 ways as a sum of consecutive naturals, for example, 14187760 + ... + 14218119.

It is an arithmetic number, because the mean of its divisors is an integer number (14316563520).

Almost surely, 2^431201243220 is an apocalyptic number.

It is an amenable number.

431201243220 is an abundant number, since it is smaller than the sum of its proper divisors (943188854700).

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

431201243220 is a wasteful number, since it uses less digits than its factorization.

431201243220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28405925 (or 28405923 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 431201243220 its reverse (22342102134), we get a palindrome (453543345354).

The spelling of 431201243220 in words is "four hundred thirty-one billion, two hundred one million, two hundred forty-three thousand, two hundred twenty".