634508431 has 2 divisors, whose sum is σ = 634508432. Its totient is φ = 634508430.

The previous prime is 634508419. The next prime is 634508443. The reversal of 634508431 is 134805436.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (634508419) and next prime (634508443).

It is a cyclic number.

It is not a de Polignac number, because 634508431 - 2⁹ = 634507919 is a prime.

It is a super-4 number, since 4×634508431⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634508411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317254215 + 317254216.

It is an arithmetic number, because the mean of its divisors is an integer number (317254216).

Almost surely, 2^634508431 is an apocalyptic number.

634508431 is a deficient number, since it is larger than the sum of its proper divisors (1).

634508431 is an equidigital number, since it uses as much as digits as its factorization.

634508431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 634508431 is about 25189.4507879787. The cubic root of 634508431 is about 859.3019533919.

The spelling of 634508431 in words is "six hundred thirty-four million, five hundred eight thousand, four hundred thirty-one".