431306664 has 16 divisors (see below), whose sum is σ = 1078266720. Its totient is φ = 143768880.

The previous prime is 431306657. The next prime is 431306683. The reversal of 431306664 is 466603134.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8985532 + ... + 8985579.

It is an arithmetic number, because the mean of its divisors is an integer number (67391670).

Almost surely, 2^431306664 is an apocalyptic number.

It is an amenable number.

431306664 is an abundant number, since it is smaller than the sum of its proper divisors (646960056).

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

431306664 is a wasteful number, since it uses less digits than its factorization.

431306664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17971120 (or 17971116 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 431306664 is about 20767.9239212782. The cubic root of 431306664 is about 755.5479927283.

Adding to 431306664 its reverse (466603134), we get a palindrome (897909798).

It can be divided in two parts, 43130 and 6664, that added together give a palindrome (49794).

The spelling of 431306664 in words is "four hundred thirty-one million, three hundred six thousand, six hundred sixty-four".