3213012441781 has 2 divisors, whose sum is σ = 3213012441782. Its totient is φ = 3213012441780.

The previous prime is 3213012441713. The next prime is 3213012441853. The reversal of 3213012441781 is 1871442103123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3077687783556 + 135324658225 = 1754334^2 + 367865^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213012441781 - 2³⁹ = 2663256627893 is a prime.

It is a super-2 number, since 2×3213012441781² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3213012441781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3213012441481) 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, 1606506220890 + 1606506220891.

It is an arithmetic number, because the mean of its divisors is an integer number (1606506220891).

Almost surely, 2^{3213012441781} is an apocalyptic number.

It is an amenable number.

3213012441781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213012441781 is an equidigital number, since it uses as much as digits as its factorization.

3213012441781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 3213012441781 in words is "three trillion, two hundred thirteen billion, twelve million, four hundred forty-one thousand, seven hundred eighty-one".