63311279 has 2 divisors, whose sum is σ = 63311280. Its totient is φ = 63311278.

The previous prime is 63311239. The next prime is 63311293. The reversal of 63311279 is 97211336.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63311279 - 2⁸ = 63311023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63311219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31655639 + 31655640.

It is an arithmetic number, because the mean of its divisors is an integer number (31655640).

Almost surely, 2^63311279 is an apocalyptic number.

63311279 is a deficient number, since it is larger than the sum of its proper divisors (1).

63311279 is an equidigital number, since it uses as much as digits as its factorization.

63311279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 63311279 is about 7956.8385053361. The cubic root of 63311279 is about 398.5599867086.

The spelling of 63311279 in words is "sixty-three million, three hundred eleven thousand, two hundred seventy-nine".