3144931566521 has 2 divisors, whose sum is σ = 3144931566522. Its totient is φ = 3144931566520.

The previous prime is 3144931566503. The next prime is 3144931566527. The reversal of 3144931566521 is 1256651394413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2522820778921 + 622110787600 = 1588339^2 + 788740^2 .

It is a cyclic number.

It is not a de Polignac number, because 3144931566521 - 2²² = 3144927372217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3144931566521.

It is not a weakly prime, because it can be changed into another prime (3144931566527) 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, 1572465783260 + 1572465783261.

It is an arithmetic number, because the mean of its divisors is an integer number (1572465783261).

Almost surely, 2^{3144931566521} is an apocalyptic number.

It is an amenable number.

3144931566521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3144931566521 is an equidigital number, since it uses as much as digits as its factorization.

3144931566521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 50.

The spelling of 3144931566521 in words is "three trillion, one hundred forty-four billion, nine hundred thirty-one million, five hundred sixty-six thousand, five hundred twenty-one".