3218406311 has 2 divisors, whose sum is σ = 3218406312. Its totient is φ = 3218406310.

The previous prime is 3218406259. The next prime is 3218406313. The reversal of 3218406311 is 1136048123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3218406311 is a prime.

Together with 3218406313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3218406313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609203155 + 1609203156.

It is an arithmetic number, because the mean of its divisors is an integer number (1609203156).

Almost surely, 2^3218406311 is an apocalyptic number.

3218406311 is a deficient number, since it is larger than the sum of its proper divisors (1).

3218406311 is an equidigital number, since it uses as much as digits as its factorization.

3218406311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 3218406311 is about 56730.9995593238. Note that the first 3 decimals coincide. The cubic root of 3218406311 is about 1476.4325924029.

The spelling of 3218406311 in words is "three billion, two hundred eighteen million, four hundred six thousand, three hundred eleven".