3211020013 has 4 divisors (see below), whose sum is σ = 3212649468. Its totient is φ = 3209390560.

The previous prime is 3211020011. The next prime is 3211020019. The reversal of 3211020013 is 3100201123.

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 1160560489 + 2050459524 = 34067^2 + 45282^2 .

It is a cyclic number.

It is not a de Polignac number, because 3211020013 - 2¹ = 3211020011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3211019975 and 3211020002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3211020011) 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, 811768 + ... + 815713.

It is an arithmetic number, because the mean of its divisors is an integer number (803162367).

Almost surely, 2^3211020013 is an apocalyptic number.

It is an amenable number.

3211020013 is a deficient number, since it is larger than the sum of its proper divisors (1629455).

3211020013 is a wasteful number, since it uses less digits than its factorization.

3211020013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629454.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 3211020013 is about 56665.8628541029. The cubic root of 3211020013 is about 1475.3022478188.

Adding to 3211020013 its reverse (3100201123), we get a palindrome (6311221136).

The spelling of 3211020013 in words is "three billion, two hundred eleven million, twenty thousand, thirteen".