311949 has 24 divisors (see below), whose sum is σ = 516672. Its totient is φ = 179520.

The previous prime is 311897. The next prime is 311951. The reversal of 311949 is 949113.

It is not a de Polignac number, because 311949 - 2⁷ = 311821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311749) 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, 2209 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (21528).

2³¹¹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

311949 is a deficient number, since it is larger than the sum of its proper divisors (204723).

311949 is a wasteful number, since it uses less digits than its factorization.

311949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 174 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 311949 is about 558.5239475618. The cubic root of 311949 is about 67.8205331080.

The spelling of 311949 in words is "three hundred eleven thousand, nine hundred forty-nine".