331118 has 4 divisors (see below), whose sum is σ = 496680. Its totient is φ = 165558.

The previous prime is 331099. The next prime is 331127. The reversal of 331118 is 811133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811133 = 443 ⋅1831.

It is a magnanimous number.

It is a junction number, because it is equal to n+sod(n) for n = 331096 and 331105.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331118.

It is an unprimeable number.

331118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82778 + ... + 82781.

It is an arithmetic number, because the mean of its divisors is an integer number (124170).

2³³¹¹¹⁸ is an apocalyptic number.

331118 is a deficient number, since it is larger than the sum of its proper divisors (165562).

331118 is a wasteful number, since it uses less digits than its factorization.

331118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165561.

The product of its digits is 72, while the sum is 17.

The square root of 331118 is about 575.4285359625. The cubic root of 331118 is about 69.1821832577.

The spelling of 331118 in words is "three hundred thirty-one thousand, one hundred eighteen".