3423230021 has 4 divisors (see below), whose sum is σ = 3424469952. Its totient is φ = 3421990092.

The previous prime is 3423230017. The next prime is 3423230033. The reversal of 3423230021 is 1200323243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1200323243 = 7 ⋅171474749.

It is a cyclic number.

It is not a de Polignac number, because 3423230021 - 2² = 3423230017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3423229975 and 3423230002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3423230011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615815 + ... + 621348.

It is an arithmetic number, because the mean of its divisors is an integer number (856117488).

Almost surely, 2^3423230021 is an apocalyptic number.

It is an amenable number.

3423230021 is a deficient number, since it is larger than the sum of its proper divisors (1239931).

3423230021 is a wasteful number, since it uses less digits than its factorization.

3423230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239930.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 3423230021 is about 58508.3756482779. The cubic root of 3423230021 is about 1507.1114201518. Note that the first 3 decimals are identical.

Adding to 3423230021 its reverse (1200323243), we get a palindrome (4623553264).

The spelling of 3423230021 in words is "three billion, four hundred twenty-three million, two hundred thirty thousand, twenty-one".