63103993 has 2 divisors, whose sum is σ = 63103994. Its totient is φ = 63103992.

The previous prime is 63103991. The next prime is 63104009. The reversal of 63103993 is 39930136.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62678889 + 425104 = 7917^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 63103993 - 2¹ = 63103991 is a prime.

It is a super-2 number, since 2×63103993² = 7964227865088098, which contains 22 as substring.

Together with 63103991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63103991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31551996 + 31551997.

It is an arithmetic number, because the mean of its divisors is an integer number (31551997).

Almost surely, 2^63103993 is an apocalyptic number.

It is an amenable number.

63103993 is a deficient number, since it is larger than the sum of its proper divisors (1).

63103993 is an equidigital number, since it uses as much as digits as its factorization.

63103993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 63103993 is about 7943.8021752811. The cubic root of 63103993 is about 398.1245391092.

The spelling of 63103993 in words is "sixty-three million, one hundred three thousand, nine hundred ninety-three".