634607431 has 2 divisors, whose sum is σ = 634607432. Its totient is φ = 634607430.

The previous prime is 634607383. The next prime is 634607437. The reversal of 634607431 is 134706436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634607431 is a prime.

It is a super-2 number, since 2×634607431² = 805453182960839522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634607437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317303715 + 317303716.

It is an arithmetic number, because the mean of its divisors is an integer number (317303716).

Almost surely, 2^634607431 is an apocalyptic number.

634607431 is a deficient number, since it is larger than the sum of its proper divisors (1).

634607431 is an equidigital number, since it uses as much as digits as its factorization.

634607431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 634607431 is about 25191.4158196795. The cubic root of 634607431 is about 859.3466423013.

The spelling of 634607431 in words is "six hundred thirty-four million, six hundred seven thousand, four hundred thirty-one".