311930 has 8 divisors (see below), whose sum is σ = 561492. Its totient is φ = 124768.

The previous prime is 311897. The next prime is 311951. The reversal of 311930 is 39113.

It can be written as a sum of positive squares in 2 ways, for example, as 310249 + 1681 = 557^2 + 41^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 311899 and 311908.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 311930.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15587 + ... + 15606.

2³¹¹⁹³⁰ is an apocalyptic number.

311930 is a deficient number, since it is larger than the sum of its proper divisors (249562).

311930 is a wasteful number, since it uses less digits than its factorization.

311930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31200.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 311930 is about 558.5069381843. The cubic root of 311930 is about 67.8191561561.

The spelling of 311930 in words is "three hundred eleven thousand, nine hundred thirty".