631141543 has 4 divisors (see below), whose sum is σ = 643049928. Its totient is φ = 619233160.

The previous prime is 631141531. The next prime is 631141559. The reversal of 631141543 is 345141136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 631141543 - 2²¹ = 629044391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631141583) 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 3 ways as a sum of consecutive naturals, for example, 5954113 + ... + 5954218.

It is an arithmetic number, because the mean of its divisors is an integer number (160762482).

Almost surely, 2^631141543 is an apocalyptic number.

631141543 is a deficient number, since it is larger than the sum of its proper divisors (11908385).

631141543 is a wasteful number, since it uses less digits than its factorization.

631141543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11908384.

The product of its digits is 4320, while the sum is 28.

The square root of 631141543 is about 25122.5305851142. The cubic root of 631141543 is about 857.7793542819.

Adding to 631141543 its reverse (345141136), we get a palindrome (976282679).

The spelling of 631141543 in words is "six hundred thirty-one million, one hundred forty-one thousand, five hundred forty-three".