231031323 has 12 divisors (see below), whose sum is σ = 334448088. Its totient is φ = 153681120.

The previous prime is 231031321. The next prime is 231031363. The reversal of 231031323 is 323130132.

231031323 is a `hidden beast` number, since 2 + 310 + 31 + 323 = 666.

It is not a de Polignac number, because 231031323 - 2¹ = 231031321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231031296 and 231031305.

It is not an unprimeable number, because it can be changed into a prime (231031321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23973 + ... + 32198.

It is an arithmetic number, because the mean of its divisors is an integer number (27870674).

Almost surely, 2^231031323 is an apocalyptic number.

231031323 is a deficient number, since it is larger than the sum of its proper divisors (103416765).

231031323 is a wasteful number, since it uses less digits than its factorization.

231031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56634 (or 56631 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 231031323 is about 15199.7145696885. The cubic root of 231031323 is about 613.6069759634.

Adding to 231031323 its reverse (323130132), we get a palindrome (554161455).

It can be divided in two parts, 2310 and 31323, that added together give a palindrome (33633).

The spelling of 231031323 in words is "two hundred thirty-one million, thirty-one thousand, three hundred twenty-three".