3243034021 has 4 divisors (see below), whose sum is σ = 3264799500. Its totient is φ = 3221268544.

The previous prime is 3243034009. The next prime is 3243034037. The reversal of 3243034021 is 1204303423.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1204303423 = 1033 ⋅1165831.

It can be written as a sum of positive squares in 2 ways, for example, as 2028511521 + 1214522500 = 45039^2 + 34850^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243034021 - 2¹¹ = 3243031973 is a prime.

It is a super-2 number, since 2×3243034021² = 21034539322726856882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3243033983 and 3243034001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243035021) 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, 10882516 + ... + 10882813.

It is an arithmetic number, because the mean of its divisors is an integer number (816199875).

Almost surely, 2^3243034021 is an apocalyptic number.

It is an amenable number.

3243034021 is a deficient number, since it is larger than the sum of its proper divisors (21765479).

3243034021 is a wasteful number, since it uses less digits than its factorization.

3243034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21765478.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 3243034021 is about 56947.6428045973. The cubic root of 3243034021 is about 1480.1889856367.

Adding to 3243034021 its reverse (1204303423), we get a palindrome (4447337444).

The spelling of 3243034021 in words is "three billion, two hundred forty-three million, thirty-four thousand, twenty-one".