431023632 has 80 divisors (see below), whose sum is σ = 1203464640. Its totient is φ = 132143616.

The previous prime is 431023631. The next prime is 431023643. The reversal of 431023632 is 236320134.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (431023631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196719 + ... + 198897.

It is an arithmetic number, because the mean of its divisors is an integer number (15043308).

Almost surely, 2^431023632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431023632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601732320).

431023632 is an abundant number, since it is smaller than the sum of its proper divisors (772441008).

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

431023632 is a wasteful number, since it uses less digits than its factorization.

431023632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520 (or 2514 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 431023632 is about 20761.1086409180. The cubic root of 431023632 is about 755.3826880309.

Adding to 431023632 its reverse (236320134), we get a palindrome (667343766).

The spelling of 431023632 in words is "four hundred thirty-one million, twenty-three thousand, six hundred thirty-two".