431344323240 has 64 divisors (see below), whose sum is σ = 1300737873600. Its totient is φ = 114429161472.

The previous prime is 431344323239. The next prime is 431344323251. The reversal of 431344323240 is 42323443134.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9289110 + ... + 9335429.

It is an arithmetic number, because the mean of its divisors is an integer number (20324029275).

Almost surely, 2^431344323240 is an apocalyptic number.

431344323240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431344323240 is an abundant number, since it is smaller than the sum of its proper divisors (869393550360).

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

431344323240 is a wasteful number, since it uses less digits than its factorization.

431344323240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18624746 (or 18624742 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 431344323240 its reverse (42323443134), we get a palindrome (473667766374).

The spelling of 431344323240 in words is "four hundred thirty-one billion, three hundred forty-four million, three hundred twenty-three thousand, two hundred forty".