634331 has 2 divisors, whose sum is σ = 634332. Its totient is φ = 634330.

The previous prime is 634327. The next prime is 634343. The reversal of 634331 is 133436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634331 - 2² = 634327 is a prime.

It is a super-2 number, since 2×634331² = 804751635122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317165 + 317166.

It is an arithmetic number, because the mean of its divisors is an integer number (317166).

2⁶³⁴³³¹ is an apocalyptic number.

634331 is a deficient number, since it is larger than the sum of its proper divisors (1).

634331 is an equidigital number, since it uses as much as digits as its factorization.

634331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 20.

The square root of 634331 is about 796.4489939726. The cubic root of 634331 is about 85.9221848851.

Adding to 634331 its reverse (133436), we get a palindrome (767767).

The spelling of 634331 in words is "six hundred thirty-four thousand, three hundred thirty-one".