3213032021 has 4 divisors (see below), whose sum is σ = 3226822092. Its totient is φ = 3199241952.

The previous prime is 3213031981. The next prime is 3213032023. The reversal of 3213032021 is 1202303123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1242915025 + 1970116996 = 35255^2 + 44386^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213032021 - 2⁶ = 3213031957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213032023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6894686 + ... + 6895151.

It is an arithmetic number, because the mean of its divisors is an integer number (806705523).

Almost surely, 2^3213032021 is an apocalyptic number.

It is an amenable number.

3213032021 is a deficient number, since it is larger than the sum of its proper divisors (13790071).

3213032021 is a wasteful number, since it uses less digits than its factorization.

3213032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13790070.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3213032021 is about 56683.6133375423. The cubic root of 3213032021 is about 1475.6103223196.

Adding to 3213032021 its reverse (1202303123), we get a palindrome (4415335144).

The spelling of 3213032021 in words is "three billion, two hundred thirteen million, thirty-two thousand, twenty-one".