634231143 has 72 divisors (see below), whose sum is σ = 1151055360. Its totient is φ = 329434560.

The previous prime is 634231133. The next prime is 634231163. The reversal of 634231143 is 341132436.

634231143 is a `hidden beast` number, since 6 + 342 + 311 + 4 + 3 = 666.

It is not a de Polignac number, because 634231143 - 2⁴ = 634231127 is a prime.

It is a super-3 number, since 3×634231143³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634231133) 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 in 71 ways as a sum of consecutive naturals, for example, 755518 + ... + 756356.

It is an arithmetic number, because the mean of its divisors is an integer number (15986880).

Almost surely, 2^634231143 is an apocalyptic number.

634231143 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

634231143 is a deficient number, since it is larger than the sum of its proper divisors (516824217).

634231143 is a wasteful number, since it uses less digits than its factorization.

634231143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 933 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 634231143 is about 25183.9461363782. The cubic root of 634231143 is about 859.1767599737.

Adding to 634231143 its reverse (341132436), we get a palindrome (975363579).

The spelling of 634231143 in words is "six hundred thirty-four million, two hundred thirty-one thousand, one hundred forty-three".