311229 has 8 divisors (see below), whose sum is σ = 461120. Its totient is φ = 207468.

The previous prime is 311203. The next prime is 311237. The reversal of 311229 is 922113.

It is a happy number.

It is not a de Polignac number, because 311229 - 2⁵ = 311197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5737 + ... + 5790.

It is an arithmetic number, because the mean of its divisors is an integer number (57640).

2³¹¹²²⁹ is an apocalyptic number.

It is an amenable number.

311229 is a deficient number, since it is larger than the sum of its proper divisors (149891).

311229 is a wasteful number, since it uses less digits than its factorization.

311229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11536 (or 11530 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 311229 is about 557.8790191430. The cubic root of 311229 is about 67.7683147428.

The spelling of 311229 in words is "three hundred eleven thousand, two hundred twenty-nine".