631134231 has 64 divisors (see below), whose sum is σ = 1103155200. Its totient is φ = 311463936.

The previous prime is 631134227. The next prime is 631134233. The reversal of 631134231 is 132431136.

It is a happy number.

631134231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 631134231 - 2² = 631134227 is a prime.

It is a super-3 number, since 3×631134231³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631134233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1108915 + ... + 1109483.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^631134231 is an apocalyptic number.

631134231 is a deficient number, since it is larger than the sum of its proper divisors (472020969).

631134231 is a wasteful number, since it uses less digits than its factorization.

631134231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848.

The product of its digits is 1296, while the sum is 24.

The square root of 631134231 is about 25122.3850579518. The cubic root of 631134231 is about 857.7760417091.

Adding to 631134231 its reverse (132431136), we get a palindrome (763565367).

The spelling of 631134231 in words is "six hundred thirty-one million, one hundred thirty-four thousand, two hundred thirty-one".