3211304420 has 36 divisors (see below), whose sum is σ = 7163777460. Its totient is φ = 1208959488.

The previous prime is 3211304401. The next prime is 3211304423. The reversal of 3211304420 is 244031123.

It can be written as a sum of positive squares in 6 ways, for example, as 256512256 + 2954792164 = 16016^2 + 54358^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3211304392 and 3211304401.

It is not an unprimeable number, because it can be changed into a prime (3211304423) 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 11 ways as a sum of consecutive naturals, for example, 272015 + ... + 283574.

Almost surely, 2^3211304420 is an apocalyptic number.

It is an amenable number.

3211304420 is an abundant number, since it is smaller than the sum of its proper divisors (3952473040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3211304420 is a wasteful number, since it uses less digits than its factorization.

3211304420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555632 (or 555613 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3211304420 is about 56668.3723076638. The cubic root of 3211304420 is about 1475.3458034384.

Adding to 3211304420 its reverse (244031123), we get a palindrome (3455335543).

The spelling of 3211304420 in words is "three billion, two hundred eleven million, three hundred four thousand, four hundred twenty".