634443031 has 4 divisors (see below), whose sum is σ = 637663752. Its totient is φ = 631222312.

The previous prime is 634443013. The next prime is 634443049. The reversal of 634443031 is 130344436.

634443031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (634443013) and next prime (634443049).

It is a cyclic number.

It is not a de Polignac number, because 634443031 - 2⁵ = 634442999 is a prime.

It is a super-2 number, since 2×634443031² = 805035919168933922, 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 (634443001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610065 + ... + 1610458.

It is an arithmetic number, because the mean of its divisors is an integer number (159415938).

Almost surely, 2^634443031 is an apocalyptic number.

634443031 is a deficient number, since it is larger than the sum of its proper divisors (3220721).

634443031 is a wasteful number, since it uses less digits than its factorization.

634443031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220720.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 634443031 is about 25188.1525920422. The cubic root of 634443031 is about 859.2724290778.

Adding to 634443031 its reverse (130344436), we get a palindrome (764787467).

The spelling of 634443031 in words is "six hundred thirty-four million, four hundred forty-three thousand, thirty-one".