431420232 has 64 divisors (see below), whose sum is σ = 1139544000. Its totient is φ = 135730944.

The previous prime is 431420221. The next prime is 431420233. The reversal of 431420232 is 232024134.

It is a super-2 number, since 2×431420232² = 372246833157867648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431420199 and 431420208.

It is not an unprimeable number, because it can be changed into a prime (431420233) 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, 131994 + ... + 135222.

It is an arithmetic number, because the mean of its divisors is an integer number (17805375).

Almost surely, 2^431420232 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 431420232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569772000).

431420232 is an abundant number, since it is smaller than the sum of its proper divisors (708123768).

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

431420232 is a wasteful number, since it uses less digits than its factorization.

431420232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550 (or 3546 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 431420232 is about 20770.6579578019. The cubic root of 431420232 is about 755.6143017311.

Adding to 431420232 its reverse (232024134), we get a palindrome (663444366).

The spelling of 431420232 in words is "four hundred thirty-one million, four hundred twenty thousand, two hundred thirty-two".