4231021 has 8 divisors (see below), whose sum is σ = 4340000. Its totient is φ = 4123440.

The previous prime is 4230997. The next prime is 4231027. The reversal of 4231021 is 1201324.

4231021 = T₂₀₀ + T₂₀₁ + ... + T₃₂₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4231021 - 2¹⁹ = 3706733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4230992 and 4231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8230 + ... + 8728.

It is an arithmetic number, because the mean of its divisors is an integer number (542500).

Almost surely, 2^4231021 is an apocalyptic number.

It is an amenable number.

4231021 is a deficient number, since it is larger than the sum of its proper divisors (108979).

4231021 is a wasteful number, since it uses less digits than its factorization.

4231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4231021 is about 2056.9445787381. The cubic root of 4231021 is about 161.7391142092.

Adding to 4231021 its reverse (1201324), we get a palindrome (5432345).

It can be divided in two parts, 423 and 1021, that added together give a square (1444 = 38²).

The spelling of 4231021 in words is "four million, two hundred thirty-one thousand, twenty-one".