63111289 has 2 divisors, whose sum is σ = 63111290. Its totient is φ = 63111288.

The previous prime is 63111281. The next prime is 63111311. The reversal of 63111289 is 98211136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44448889 + 18662400 = 6667^2 + 4320^2 .

It is a cyclic number.

It is not a de Polignac number, because 63111289 - 2³ = 63111281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63111289.

It is not a weakly prime, because it can be changed into another prime (63111281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31555644 + 31555645.

It is an arithmetic number, because the mean of its divisors is an integer number (31555645).

Almost surely, 2^63111289 is an apocalyptic number.

It is an amenable number.

63111289 is a deficient number, since it is larger than the sum of its proper divisors (1).

63111289 is an equidigital number, since it uses as much as digits as its factorization.

63111289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 31.

The square root of 63111289 is about 7944.2613879454. The cubic root of 63111289 is about 398.1398820616.

The spelling of 63111289 in words is "sixty-three million, one hundred eleven thousand, two hundred eighty-nine".