634031903 has 2 divisors, whose sum is σ = 634031904. Its totient is φ = 634031902.

The previous prime is 634031899. The next prime is 634031971. The reversal of 634031903 is 309130436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634031903 - 2² = 634031899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634034903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317015951 + 317015952.

It is an arithmetic number, because the mean of its divisors is an integer number (317015952).

Almost surely, 2^634031903 is an apocalyptic number.

634031903 is a deficient number, since it is larger than the sum of its proper divisors (1).

634031903 is an equidigital number, since it uses as much as digits as its factorization.

634031903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 634031903 is about 25179.9901310545. The cubic root of 634031903 is about 859.0867821015.

The spelling of 634031903 in words is "six hundred thirty-four million, thirty-one thousand, nine hundred three".