631448723 has 2 divisors, whose sum is σ = 631448724. Its totient is φ = 631448722.

The previous prime is 631448707. The next prime is 631448729. The reversal of 631448723 is 327844136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631448723 - 2⁴ = 631448707 is a prime.

It is a super-4 number, since 4×631448723⁴ (a number of 36 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (631448729) 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, 315724361 + 315724362.

It is an arithmetic number, because the mean of its divisors is an integer number (315724362).

Almost surely, 2^631448723 is an apocalyptic number.

631448723 is a deficient number, since it is larger than the sum of its proper divisors (1).

631448723 is an equidigital number, since it uses as much as digits as its factorization.

631448723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

The square root of 631448723 is about 25128.6434771159. The cubic root of 631448723 is about 857.9184936603.

The spelling of 631448723 in words is "six hundred thirty-one million, four hundred forty-eight thousand, seven hundred twenty-three".