631540230 has 16 divisors (see below), whose sum is σ = 1515696624. Its totient is φ = 168410720.

The previous prime is 631540229. The next prime is 631540241. The reversal of 631540230 is 32045136.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 631540230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10525641 + ... + 10525700.

It is an arithmetic number, because the mean of its divisors is an integer number (94731039).

Almost surely, 2^631540230 is an apocalyptic number.

631540230 is an abundant number, since it is smaller than the sum of its proper divisors (884156394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631540230 is a wasteful number, since it uses less digits than its factorization.

631540230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21051351.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 631540230 is about 25130.4641819446. The cubic root of 631540230 is about 857.9599336869.

Adding to 631540230 its reverse (32045136), we get a palindrome (663585366).

The spelling of 631540230 in words is "six hundred thirty-one million, five hundred forty thousand, two hundred thirty".