63009931 has 2 divisors, whose sum is σ = 63009932. Its totient is φ = 63009930.

The previous prime is 63009923. The next prime is 63009971. The reversal of 63009931 is 13990036.

63009931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63009931 - 2³ = 63009923 is a prime.

It is a super-2 number, since 2×63009931² = 7940502809249522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63009893 and 63009902.

It is not a weakly prime, because it can be changed into another prime (63009911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31504965 + 31504966.

It is an arithmetic number, because the mean of its divisors is an integer number (31504966).

Almost surely, 2^63009931 is an apocalyptic number.

63009931 is a deficient number, since it is larger than the sum of its proper divisors (1).

63009931 is an equidigital number, since it uses as much as digits as its factorization.

63009931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 63009931 is about 7937.8795027388. The cubic root of 63009931 is about 397.9266276367.

Adding to 63009931 its reverse (13990036), we get a palindrome (76999967).

The spelling of 63009931 in words is "sixty-three million, nine thousand, nine hundred thirty-one".