630542323 has 2 divisors, whose sum is σ = 630542324. Its totient is φ = 630542322.

The previous prime is 630542317. The next prime is 630542351. The reversal of 630542323 is 323245036.

It is an a-pointer prime, because the next prime (630542351) can be obtained adding 630542323 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630542323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 630542291 and 630542300.

It is not a weakly prime, because it can be changed into another prime (630542023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315271161 + 315271162.

It is an arithmetic number, because the mean of its divisors is an integer number (315271162).

Almost surely, 2^630542323 is an apocalyptic number.

630542323 is a deficient number, since it is larger than the sum of its proper divisors (1).

630542323 is an equidigital number, since it uses as much as digits as its factorization.

630542323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 630542323 is about 25110.6018048154. The cubic root of 630542323 is about 857.5078033102.

Adding to 630542323 its reverse (323245036), we get a palindrome (953787359).

The spelling of 630542323 in words is "six hundred thirty million, five hundred forty-two thousand, three hundred twenty-three".