331343 has 4 divisors (see below), whose sum is σ = 334080. Its totient is φ = 328608.

The previous prime is 331339. The next prime is 331349. The reversal of 331343 is 343133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343133 = 7 ⋅49019.

It is a cyclic number.

It is not a de Polignac number, because 331343 - 2² = 331339 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 (331349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178 + ... + 1431.

It is an arithmetic number, because the mean of its divisors is an integer number (83520).

2³³¹³⁴³ is an apocalyptic number.

331343 is a deficient number, since it is larger than the sum of its proper divisors (2737).

331343 is a wasteful number, since it uses less digits than its factorization.

331343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736.

The product of its digits is 324, while the sum is 17.

The square root of 331343 is about 575.6240092282. The cubic root of 331343 is about 69.1978498446.

Adding to 331343 its reverse (343133), we get a palindrome (674476).

The spelling of 331343 in words is "three hundred thirty-one thousand, three hundred forty-three".