4213231220 has 24 divisors (see below), whose sum is σ = 9652130208. Its totient is φ = 1532084000.

The previous prime is 4213231213. The next prime is 4213231259. The reversal of 4213231220 is 221323124.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4213231192 and 4213231201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9575306 + ... + 9575745.

It is an arithmetic number, because the mean of its divisors is an integer number (402172092).

Almost surely, 2^4213231220 is an apocalyptic number.

It is an amenable number.

4213231220 is an abundant number, since it is smaller than the sum of its proper divisors (5438898988).

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

4213231220 is a wasteful number, since it uses less digits than its factorization.

4213231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19151071 (or 19151069 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4213231220 is about 64909.4077927075. The cubic root of 4213231220 is about 1615.1211262978.

Adding to 4213231220 its reverse (221323124), we get a palindrome (4434554344).

The spelling of 4213231220 in words is "four billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred twenty".