3213480821 has 8 divisors (see below), whose sum is σ = 3380829144. Its totient is φ = 3050369280.

The previous prime is 3213480799. The next prime is 3213480839. The reversal of 3213480821 is 1280843123.

It can be written as a sum of positive squares in 4 ways, for example, as 1114558225 + 2098922596 = 33385^2 + 45814^2 .

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 3213480821 - 2²⁶ = 3146371957 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 (3213480841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057640 + ... + 1060673.

It is an arithmetic number, because the mean of its divisors is an integer number (422603643).

Almost surely, 2^3213480821 is an apocalyptic number.

It is an amenable number.

3213480821 is a deficient number, since it is larger than the sum of its proper divisors (167348323).

3213480821 is a wasteful number, since it uses less digits than its factorization.

3213480821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118391.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 3213480821 is about 56687.5720153898. The cubic root of 3213480821 is about 1475.6790241020.

The spelling of 3213480821 in words is "three billion, two hundred thirteen million, four hundred eighty thousand, eight hundred twenty-one".