631002243 has 16 divisors (see below), whose sum is σ = 892494720. Its totient is φ = 395181696.

The previous prime is 631002191. The next prime is 631002269. The reversal of 631002243 is 342200136.

It is a happy number.

It is not a de Polignac number, because 631002243 - 2⁹ = 631001731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631002143) 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 in 15 ways as a sum of consecutive naturals, for example, 16588 + ... + 39206.

It is an arithmetic number, because the mean of its divisors is an integer number (55780920).

Almost surely, 2^631002243 is an apocalyptic number.

631002243 is a deficient number, since it is larger than the sum of its proper divisors (261492477).

631002243 is a wasteful number, since it uses less digits than its factorization.

631002243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23186.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 631002243 is about 25119.7580203313. The cubic root of 631002243 is about 857.7162424716.

Adding to 631002243 its reverse (342200136), we get a palindrome (973202379).

The spelling of 631002243 in words is "six hundred thirty-one million, two thousand, two hundred forty-three".