63391123 has 2 divisors, whose sum is σ = 63391124. Its totient is φ = 63391122.

The previous prime is 63391121. The next prime is 63391169. The reversal of 63391123 is 32119336.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63391123 - 2¹ = 63391121 is a prime.

It is a super-2 number, since 2×63391123² = 8036868950402258, which contains 22 as substring.

Together with 63391121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 63391091 and 63391100.

It is not a weakly prime, because it can be changed into another prime (63391121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31695561 + 31695562.

It is an arithmetic number, because the mean of its divisors is an integer number (31695562).

Almost surely, 2^63391123 is an apocalyptic number.

63391123 is a deficient number, since it is larger than the sum of its proper divisors (1).

63391123 is an equidigital number, since it uses as much as digits as its factorization.

63391123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 28.

The square root of 63391123 is about 7961.8542438304. The cubic root of 63391123 is about 398.7274621617.

The spelling of 63391123 in words is "sixty-three million, three hundred ninety-one thousand, one hundred twenty-three".