43345313 has 4 divisors (see below), whose sum is σ = 47285808. Its totient is φ = 39404820.

The previous prime is 43345307. The next prime is 43345369. The reversal of 43345313 is 31354334.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43345313 - 2⁴ = 43345297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43345303) 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, 1970231 + ... + 1970252.

It is an arithmetic number, because the mean of its divisors is an integer number (11821452).

Almost surely, 2^43345313 is an apocalyptic number.

It is an amenable number.

43345313 is a deficient number, since it is larger than the sum of its proper divisors (3940495).

43345313 is a wasteful number, since it uses less digits than its factorization.

43345313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940494.

The product of its digits is 6480, while the sum is 26.

The square root of 43345313 is about 6583.7157441676. The cubic root of 43345313 is about 351.2751121638.

Adding to 43345313 its reverse (31354334), we get a palindrome (74699647).

The spelling of 43345313 in words is "forty-three million, three hundred forty-five thousand, three hundred thirteen".