634148431 has 8 divisors (see below), whose sum is σ = 748120064. Its totient is φ = 526021560.

The previous prime is 634148377. The next prime is 634148507. The reversal of 634148431 is 134841436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634148431 - 2⁹ = 634147919 is a prime.

It is a super-2 number, since 2×634148431² = 804288465079523522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634148831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460955 + ... + 1461388.

It is an arithmetic number, because the mean of its divisors is an integer number (93515008).

Almost surely, 2^634148431 is an apocalyptic number.

634148431 is a deficient number, since it is larger than the sum of its proper divisors (113971633).

634148431 is a wasteful number, since it uses less digits than its factorization.

634148431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922381.

The product of its digits is 27648, while the sum is 34.

The square root of 634148431 is about 25182.3039255744. The cubic root of 634148431 is about 859.1394090707.

Adding to 634148431 its reverse (134841436), we get a palindrome (768989867).

The spelling of 634148431 in words is "six hundred thirty-four million, one hundred forty-eight thousand, four hundred thirty-one".