630342631 has 2 divisors, whose sum is σ = 630342632. Its totient is φ = 630342630.

The previous prime is 630342599. The next prime is 630342641. The reversal of 630342631 is 136243036.

630342631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630342631 - 2⁵ = 630342599 is a prime.

It is a super-2 number, since 2×630342631² = 794663664912004322, 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 630342631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630342641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315171315 + 315171316.

It is an arithmetic number, because the mean of its divisors is an integer number (315171316).

Almost surely, 2^630342631 is an apocalyptic number.

630342631 is a deficient number, since it is larger than the sum of its proper divisors (1).

630342631 is an equidigital number, since it uses as much as digits as its factorization.

630342631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 630342631 is about 25106.6252411590. The cubic root of 630342631 is about 857.4172698535.

Adding to 630342631 its reverse (136243036), we get a palindrome (766585667).

The spelling of 630342631 in words is "six hundred thirty million, three hundred forty-two thousand, six hundred thirty-one".