630140023 has 2 divisors, whose sum is σ = 630140024. Its totient is φ = 630140022.

The previous prime is 630139967. The next prime is 630140041. The reversal of 630140023 is 320041036.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630140023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630140083) 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, 315070011 + 315070012.

It is an arithmetic number, because the mean of its divisors is an integer number (315070012).

Almost surely, 2^630140023 is an apocalyptic number.

630140023 is a deficient number, since it is larger than the sum of its proper divisors (1).

630140023 is an equidigital number, since it uses as much as digits as its factorization.

630140023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 630140023 is about 25102.5899659776. The cubic root of 630140023 is about 857.3253948395.

Adding to 630140023 its reverse (320041036), we get a palindrome (950181059).

The spelling of 630140023 in words is "six hundred thirty million, one hundred forty thousand, twenty-three".