634016431 has 2 divisors, whose sum is σ = 634016432. Its totient is φ = 634016430.

The previous prime is 634016363. The next prime is 634016437. The reversal of 634016431 is 134610436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634016431 - 2⁹ = 634015919 is a prime.

It is a super-2 number, since 2×634016431² = 803953669555955522, 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 634016431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634016437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317008215 + 317008216.

It is an arithmetic number, because the mean of its divisors is an integer number (317008216).

Almost surely, 2^634016431 is an apocalyptic number.

634016431 is a deficient number, since it is larger than the sum of its proper divisors (1).

634016431 is an equidigital number, since it uses as much as digits as its factorization.

634016431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 634016431 is about 25179.6829011010. The cubic root of 634016431 is about 859.0797940732.

Adding to 634016431 its reverse (134610436), we get a palindrome (768626867).

The spelling of 634016431 in words is "six hundred thirty-four million, sixteen thousand, four hundred thirty-one".