431680860 has 96 divisors (see below), whose sum is σ = 1446338880. Its totient is φ = 106258176.

The previous prime is 431680849. The next prime is 431680867. The reversal of 431680860 is 68086134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431680867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23727 + ... + 37766.

It is an arithmetic number, because the mean of its divisors is an integer number (15066030).

Almost surely, 2^431680860 is an apocalyptic number.

It is an amenable number.

431680860 is an abundant number, since it is smaller than the sum of its proper divisors (1014658020).

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

431680860 is a wasteful number, since it uses less digits than its factorization.

431680860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61524 (or 61516 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 431680860 is about 20776.9309571938. The cubic root of 431680860 is about 755.7664307427.

The spelling of 431680860 in words is "four hundred thirty-one million, six hundred eighty thousand, eight hundred sixty".