3211312005 has 48 divisors (see below), whose sum is σ = 6084936000. Its totient is φ = 1553760000.

The previous prime is 3211311949. The next prime is 3211312009. The reversal of 3211312005 is 5002131123.

It is not a de Polignac number, because 3211312005 - 2¹³ = 3211303813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3211312009) 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 47 ways as a sum of consecutive naturals, for example, 240505 + ... + 253505.

It is an arithmetic number, because the mean of its divisors is an integer number (126769500).

Almost surely, 2^3211312005 is an apocalyptic number.

It is an amenable number.

3211312005 is a deficient number, since it is larger than the sum of its proper divisors (2873623995).

3211312005 is a wasteful number, since it uses less digits than its factorization.

3211312005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13522 (or 13519 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 3211312005 is about 56668.4392320805. The cubic root of 3211312005 is about 1475.3469650110.

Adding to 3211312005 its reverse (5002131123), we get a palindrome (8213443128).

The spelling of 3211312005 in words is "three billion, two hundred eleven million, three hundred twelve thousand, five".