63731923 has 2 divisors, whose sum is σ = 63731924. Its totient is φ = 63731922.

The previous prime is 63731911. The next prime is 63731933. The reversal of 63731923 is 32913736.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63731923 - 2⁹ = 63731411 is a prime.

It is not a weakly prime, because it can be changed into another prime (63731903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31865961 + 31865962.

It is an arithmetic number, because the mean of its divisors is an integer number (31865962).

Almost surely, 2^63731923 is an apocalyptic number.

63731923 is a deficient number, since it is larger than the sum of its proper divisors (1).

63731923 is an equidigital number, since it uses as much as digits as its factorization.

63731923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 34.

The square root of 63731923 is about 7983.2276054238. The cubic root of 63731923 is about 399.4407246421.

The spelling of 63731923 in words is "sixty-three million, seven hundred thirty-one thousand, nine hundred twenty-three".