634143127 has 2 divisors, whose sum is σ = 634143128. Its totient is φ = 634143126.

The previous prime is 634143119. The next prime is 634143173. The reversal of 634143127 is 721341436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634143127 - 2³ = 634143119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634143427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317071563 + 317071564.

It is an arithmetic number, because the mean of its divisors is an integer number (317071564).

Almost surely, 2^634143127 is an apocalyptic number.

634143127 is a deficient number, since it is larger than the sum of its proper divisors (1).

634143127 is an equidigital number, since it uses as much as digits as its factorization.

634143127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 634143127 is about 25182.1986133062. The cubic root of 634143127 is about 859.1370137913.

The spelling of 634143127 in words is "six hundred thirty-four million, one hundred forty-three thousand, one hundred twenty-seven".