431344132440 has 128 divisors (see below), whose sum is σ = 1466919417600. Its totient is φ = 100588746240.

The previous prime is 431344132397. The next prime is 431344132463. The reversal of 431344132440 is 44231443134.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7246746 + ... + 7306025.

It is an arithmetic number, because the mean of its divisors is an integer number (11460307950).

Almost surely, 2^431344132440 is an apocalyptic number.

431344132440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431344132440 is an abundant number, since it is smaller than the sum of its proper divisors (1035575285160).

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

431344132440 is a wasteful number, since it uses less digits than its factorization.

431344132440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14552817 (or 14552813 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 431344132440 its reverse (44231443134), we get a palindrome (475575575574).

The spelling of 431344132440 in words is "four hundred thirty-one billion, three hundred forty-four million, one hundred thirty-two thousand, four hundred forty".