4231220 has 24 divisors (see below), whose sum is σ = 10155264. Its totient is φ = 1450656.

The previous prime is 4231219. The next prime is 4231229. The reversal of 4231220 is 221324.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 4231195 and 4231204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231229) 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, 14972 + ... + 15251.

It is an arithmetic number, because the mean of its divisors is an integer number (423136).

Almost surely, 2^4231220 is an apocalyptic number.

It is an amenable number.

4231220 is an abundant number, since it is smaller than the sum of its proper divisors (5924044).

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

4231220 is a wasteful number, since it uses less digits than its factorization.

4231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30239 (or 30237 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4231220 is about 2056.9929508873. The cubic root of 4231220 is about 161.7416498918.

Adding to 4231220 its reverse (221324), we get a palindrome (4452544).

The spelling of 4231220 in words is "four million, two hundred thirty-one thousand, two hundred twenty".