431705568 has 48 divisors (see below), whose sum is σ = 1295118720. Its totient is φ = 123344256.

The previous prime is 431705567. The next prime is 431705611. The reversal of 431705568 is 865507134.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431705567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320538 + ... + 321881.

It is an arithmetic number, because the mean of its divisors is an integer number (26981640).

Almost surely, 2^431705568 is an apocalyptic number.

431705568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

431705568 is an abundant number, since it is smaller than the sum of its proper divisors (863413152).

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

431705568 is a wasteful number, since it uses less digits than its factorization.

431705568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642439 (or 642431 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 431705568 is about 20777.5255504596. The cubic root of 431705568 is about 755.7808496669.

The spelling of 431705568 in words is "four hundred thirty-one million, seven hundred five thousand, five hundred sixty-eight".