630319139 has 2 divisors, whose sum is σ = 630319140. Its totient is φ = 630319138.

The previous prime is 630319133. The next prime is 630319141. The reversal of 630319139 is 931913036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630319139 - 2²⁰ = 629270563 is a prime.

Together with 630319141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 630319099 and 630319108.

It is not a weakly prime, because it can be changed into another prime (630319133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315159569 + 315159570.

It is an arithmetic number, because the mean of its divisors is an integer number (315159570).

Almost surely, 2^630319139 is an apocalyptic number.

630319139 is a deficient number, since it is larger than the sum of its proper divisors (1).

630319139 is an equidigital number, since it uses as much as digits as its factorization.

630319139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 630319139 is about 25106.1573921618. The cubic root of 630319139 is about 857.4066181350.

The spelling of 630319139 in words is "six hundred thirty million, three hundred nineteen thousand, one hundred thirty-nine".