631267379 has 2 divisors, whose sum is σ = 631267380. Its totient is φ = 631267378.

The previous prime is 631267363. The next prime is 631267451. The reversal of 631267379 is 973762136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631267379 - 2⁴ = 631267363 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (631267339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315633689 + 315633690.

It is an arithmetic number, because the mean of its divisors is an integer number (315633690).

Almost surely, 2^631267379 is an apocalyptic number.

631267379 is a deficient number, since it is larger than the sum of its proper divisors (1).

631267379 is an equidigital number, since it uses as much as digits as its factorization.

631267379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 44.

The square root of 631267379 is about 25125.0349054484. The cubic root of 631267379 is about 857.8363580561.

The spelling of 631267379 in words is "six hundred thirty-one million, two hundred sixty-seven thousand, three hundred seventy-nine".