311231323 has 8 divisors (see below), whose sum is σ = 339416000. Its totient is φ = 283652928.

The previous prime is 311231311. The next prime is 311231341. The reversal of 311231323 is 323132113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311231323 - 2²⁵ = 277676891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311231323.

It is not an unprimeable number, because it can be changed into a prime (311231303) 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 7 ways as a sum of consecutive naturals, for example, 150498 + ... + 152551.

It is an arithmetic number, because the mean of its divisors is an integer number (42427000).

Almost surely, 2^311231323 is an apocalyptic number.

311231323 is a deficient number, since it is larger than the sum of its proper divisors (28184677).

311231323 is a wasteful number, since it uses less digits than its factorization.

311231323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303141.

The product of its digits is 324, while the sum is 19.

The square root of 311231323 is about 17641.7494313914. The cubic root of 311231323 is about 677.6848334901.

Adding to 311231323 its reverse (323132113), we get a palindrome (634363436).

The spelling of 311231323 in words is "three hundred eleven million, two hundred thirty-one thousand, three hundred twenty-three".