631623067 has 2 divisors, whose sum is σ = 631623068. Its totient is φ = 631623066.

The previous prime is 631623059. The next prime is 631623071. The reversal of 631623067 is 760326136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631623067 - 2³ = 631623059 is a prime.

It is not a weakly prime, because it can be changed into another prime (631623007) 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, 315811533 + 315811534.

It is an arithmetic number, because the mean of its divisors is an integer number (315811534).

Almost surely, 2^631623067 is an apocalyptic number.

631623067 is a deficient number, since it is larger than the sum of its proper divisors (1).

631623067 is an equidigital number, since it uses as much as digits as its factorization.

631623067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 631623067 is about 25132.1122669783. The cubic root of 631623067 is about 857.9974439496.

The spelling of 631623067 in words is "six hundred thirty-one million, six hundred twenty-three thousand, sixty-seven".