331273 has 4 divisors (see below), whose sum is σ = 332820. Its totient is φ = 329728.

The previous prime is 331259. The next prime is 331277. The reversal of 331273 is 372133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 372133 = 197 ⋅1889.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 26569 = 552^2 + 163^2 .

It is a cyclic number.

It is not a de Polignac number, because 331273 - 2⁵ = 331241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331273.

It is not an unprimeable number, because it can be changed into a prime (331277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388 + ... + 901.

It is an arithmetic number, because the mean of its divisors is an integer number (83205).

2³³¹²⁷³ is an apocalyptic number.

It is an amenable number.

331273 is a deficient number, since it is larger than the sum of its proper divisors (1547).

331273 is a wasteful number, since it uses less digits than its factorization.

331273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546.

The product of its digits is 378, while the sum is 19.

The square root of 331273 is about 575.5632024374. The cubic root of 331273 is about 69.1929765556.

The spelling of 331273 in words is "three hundred thirty-one thousand, two hundred seventy-three".