634130343 has 32 divisors (see below), whose sum is σ = 1171269120. Its totient is φ = 329417280.

The previous prime is 634130291. The next prime is 634130347. The reversal of 634130343 is 343031436.

It is not a de Polignac number, because 634130343 - 2¹⁷ = 633999271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634130347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150430 + ... + 154587.

It is an arithmetic number, because the mean of its divisors is an integer number (36602160).

Almost surely, 2^634130343 is an apocalyptic number.

634130343 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

634130343 is a deficient number, since it is larger than the sum of its proper divisors (537138777).

634130343 is a wasteful number, since it uses less digits than its factorization.

634130343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305044 (or 305038 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 634130343 is about 25181.9447819266. The cubic root of 634130343 is about 859.1312404987.

Adding to 634130343 its reverse (343031436), we get a palindrome (977161779).

The spelling of 634130343 in words is "six hundred thirty-four million, one hundred thirty thousand, three hundred forty-three".