631712633 has 2 divisors, whose sum is σ = 631712634. Its totient is φ = 631712632.

The previous prime is 631712623. The next prime is 631712647. The reversal of 631712633 is 336217136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631667689 + 44944 = 25133^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 631712633 - 2⁶ = 631712569 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631712633.

It is not a weakly prime, because it can be changed into another prime (631712603) 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, 315856316 + 315856317.

It is an arithmetic number, because the mean of its divisors is an integer number (315856317).

Almost surely, 2^631712633 is an apocalyptic number.

It is an amenable number.

631712633 is a deficient number, since it is larger than the sum of its proper divisors (1).

631712633 is an equidigital number, since it uses as much as digits as its factorization.

631712633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 32.

The square root of 631712633 is about 25133.8941073603. The cubic root of 631712633 is about 858.0379975493.

Adding to 631712633 its reverse (336217136), we get a palindrome (967929769).

It can be divided in two parts, 6317 and 12633, that multiplied together give a triangular number (79802661 = T₁₂₆₃₃).

The spelling of 631712633 in words is "six hundred thirty-one million, seven hundred twelve thousand, six hundred thirty-three".