631147079 has 2 divisors, whose sum is σ = 631147080. Its totient is φ = 631147078.

The previous prime is 631147063. The next prime is 631147093. The reversal of 631147079 is 970741136.

631147079 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 631147079 - 2⁴ = 631147063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631147579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315573539 + 315573540.

It is an arithmetic number, because the mean of its divisors is an integer number (315573540).

Almost surely, 2^631147079 is an apocalyptic number.

631147079 is a deficient number, since it is larger than the sum of its proper divisors (1).

631147079 is an equidigital number, since it uses as much as digits as its factorization.

631147079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 631147079 is about 25122.6407648559. The cubic root of 631147079 is about 857.7818622521.

The spelling of 631147079 in words is "six hundred thirty-one million, one hundred forty-seven thousand, seventy-nine".