43240313 has 4 divisors (see below), whose sum is σ = 43267920. Its totient is φ = 43212708.

The previous prime is 43240297. The next prime is 43240321. The reversal of 43240313 is 31304234.

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 43240313 - 2⁴ = 43240297 is a prime.

It is a super-5 number, since 5×43240313⁵ (a number of 39 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43240343) 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, 11303 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (10816980).

Almost surely, 2^43240313 is an apocalyptic number.

It is an amenable number.

43240313 is a deficient number, since it is larger than the sum of its proper divisors (27607).

43240313 is a wasteful number, since it uses less digits than its factorization.

43240313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27606.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 43240313 is about 6575.7366887673. The cubic root of 43240313 is about 350.9912390299.

Adding to 43240313 its reverse (31304234), we get a palindrome (74544547).

The spelling of 43240313 in words is "forty-three million, two hundred forty thousand, three hundred thirteen".