631135323 has 48 divisors (see below), whose sum is σ = 1160752320. Its totient is φ = 321414912.

The previous prime is 631135321. The next prime is 631135333. The reversal of 631135323 is 323531136.

It is a happy number.

631135323 is a `hidden beast` number, since 631 + 1 + 3 + 5 + 3 + 23 = 666.

It is not a de Polignac number, because 631135323 - 2¹ = 631135321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631135321) 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 47 ways as a sum of consecutive naturals, for example, 10465 + ... + 37037.

It is an arithmetic number, because the mean of its divisors is an integer number (24182340).

Almost surely, 2^631135323 is an apocalyptic number.

631135323 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

631135323 is a deficient number, since it is larger than the sum of its proper divisors (529616997).

631135323 is a wasteful number, since it uses less digits than its factorization.

631135323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26628 (or 26625 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

The square root of 631135323 is about 25122.4067915477. The cubic root of 631135323 is about 857.7765364221.

Adding to 631135323 its reverse (323531136), we get a palindrome (954666459).

The spelling of 631135323 in words is "six hundred thirty-one million, one hundred thirty-five thousand, three hundred twenty-three".