431539968 has 72 divisors (see below), whose sum is σ = 1216122768. Its totient is φ = 135380992.

The previous prime is 431539937. The next prime is 431539987. The reversal of 431539968 is 869935134.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3471 + ... + 29582.

It is an arithmetic number, because the mean of its divisors is an integer number (16890594).

Almost surely, 2^431539968 is an apocalyptic number.

431539968 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431539968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608061384).

431539968 is an abundant number, since it is smaller than the sum of its proper divisors (784582800).

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

431539968 is a wasteful number, since it uses less digits than its factorization.

431539968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33089 (or 33075 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 431539968 is about 20773.5400931088. The cubic root of 431539968 is about 755.6841994461.

The spelling of 431539968 in words is "four hundred thirty-one million, five hundred thirty-nine thousand, nine hundred sixty-eight".