4231320 has 64 divisors (see below), whose sum is σ = 13050720. Its totient is φ = 1096704.

The previous prime is 4231313. The next prime is 4231321. The reversal of 4231320 is 231324.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 4231320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231321) 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, 3964 + ... + 4916.

Almost surely, 2^4231320 is an apocalyptic number.

4231320 is a gapful number since it is divisible by the number (40) 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 4231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6525360).

4231320 is an abundant number, since it is smaller than the sum of its proper divisors (8819400).

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

4231320 is a wasteful number, since it uses less digits than its factorization.

4231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 4231320 is about 2057.0172580705. The cubic root of 4231320 is about 161.7429240742.

Adding to 4231320 its reverse (231324), we get a palindrome (4462644).

The spelling of 4231320 in words is "four million, two hundred thirty-one thousand, three hundred twenty".