3181343 has 4 divisors (see below), whose sum is σ = 3470568. Its totient is φ = 2892120.

The previous prime is 3181331. The next prime is 3181349. The reversal of 3181343 is 3431813.

It is a happy number.

3181343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3181343 - 2⁴ = 3181327 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 (3181349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144596 + ... + 144617.

It is an arithmetic number, because the mean of its divisors is an integer number (867642).

Almost surely, 2^3181343 is an apocalyptic number.

3181343 is a deficient number, since it is larger than the sum of its proper divisors (289225).

3181343 is a wasteful number, since it uses less digits than its factorization.

3181343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289224.

The product of its digits is 864, while the sum is 23.

The square root of 3181343 is about 1783.6319687649. The cubic root of 3181343 is about 147.0743141612.

It can be divided in two parts, 318 and 1343, that added together give a palindrome (1661).

The spelling of 3181343 in words is "three million, one hundred eighty-one thousand, three hundred forty-three".