631066143 has 8 divisors (see below), whose sum is σ = 841580928. Its totient is φ = 420631064.

The previous prime is 631066123. The next prime is 631066193. The reversal of 631066143 is 341660136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631066143 - 2⁸ = 631065887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631066143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631066103) 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 in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 35582.

It is an arithmetic number, because the mean of its divisors is an integer number (105197616).

Almost surely, 2^631066143 is an apocalyptic number.

631066143 is a deficient number, since it is larger than the sum of its proper divisors (210514785).

631066143 is a wasteful number, since it uses less digits than its factorization.

631066143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39853.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 631066143 is about 25121.0298952889. The cubic root of 631066143 is about 857.7451944120.

The spelling of 631066143 in words is "six hundred thirty-one million, sixty-six thousand, one hundred forty-three".