311989223 has 24 divisors (see below), whose sum is σ = 391964832. Its totient is φ = 246141504.

The previous prime is 311989187. The next prime is 311989241. The reversal of 311989223 is 322989113.

It is not a de Polignac number, because 311989223 - 2¹⁴ = 311972839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311959223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411761 + ... + 412517.

It is an arithmetic number, because the mean of its divisors is an integer number (16331868).

Almost surely, 2^311989223 is an apocalyptic number.

311989223 is a deficient number, since it is larger than the sum of its proper divisors (79975609).

311989223 is a wasteful number, since it uses less digits than its factorization.

311989223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 1424 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 311989223 is about 17663.2166662814. The cubic root of 311989223 is about 678.2344793066.

The spelling of 311989223 in words is "three hundred eleven million, nine hundred eighty-nine thousand, two hundred twenty-three".