634324231 has 2 divisors, whose sum is σ = 634324232. Its totient is φ = 634324230.

The previous prime is 634324133. The next prime is 634324237. The reversal of 634324231 is 132423436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634324231 - 2⁹ = 634323719 is a prime.

It is a super-2 number, since 2×634324231² = 804734460067482722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 634324231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634324237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317162115 + 317162116.

It is an arithmetic number, because the mean of its divisors is an integer number (317162116).

Almost surely, 2^634324231 is an apocalyptic number.

634324231 is a deficient number, since it is larger than the sum of its proper divisors (1).

634324231 is an equidigital number, since it uses as much as digits as its factorization.

634324231 is an evil number, because the sum of its binary digits is even.

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

The square root of 634324231 is about 25185.7942300814. The cubic root of 634324231 is about 859.2187925641.

Adding to 634324231 its reverse (132423436), we get a palindrome (766747667).

The spelling of 634324231 in words is "six hundred thirty-four million, three hundred twenty-four thousand, two hundred thirty-one".