631643230245 has 16 divisors (see below), whose sum is σ = 1035278661312. Its totient is φ = 328659891840.

The previous prime is 631643230223. The next prime is 631643230277. The reversal of 631643230245 is 542032346136.

It is not a de Polignac number, because 631643230245 - 2¹¹ = 631643228197 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 513530467 + ... + 513531696.

It is an arithmetic number, because the mean of its divisors is an integer number (64704916332).

Almost surely, 2^631643230245 is an apocalyptic number.

It is an amenable number.

631643230245 is a deficient number, since it is larger than the sum of its proper divisors (403635431067).

631643230245 is a wasteful number, since it uses less digits than its factorization.

631643230245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027062212.

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 631643230245 in words is "six hundred thirty-one billion, six hundred forty-three million, two hundred thirty thousand, two hundred forty-five".