431405281768 has 16 divisors (see below), whose sum is σ = 809023002660. Its totient is φ = 215665814400.

The previous prime is 431405281739. The next prime is 431405281837. The reversal of 431405281768 is 867182504134.

It can be written as a sum of positive squares in 2 ways, for example, as 428529962884 + 2875318884 = 654622^2 + 53622^2 .

It is a super-2 number, since 2×431405281768² (a number of 24 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 4553493 + ... + 4647268.

Almost surely, 2^431405281768 is an apocalyptic number.

It is an amenable number.

431405281768 is a deficient number, since it is larger than the sum of its proper divisors (377617720892).

431405281768 is a wasteful number, since it uses less digits than its factorization.

431405281768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9206628 (or 9206624 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 431405281768 in words is "four hundred thirty-one billion, four hundred five million, two hundred eighty-one thousand, seven hundred sixty-eight".