43313761 has 4 divisors (see below), whose sum is σ = 45196992. Its totient is φ = 41430532.

The previous prime is 43313759. The next prime is 43313779. The reversal of 43313761 is 16731334.

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 43313761 - 2¹ = 43313759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43313741) 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, 941581 + ... + 941626.

It is an arithmetic number, because the mean of its divisors is an integer number (11299248).

Almost surely, 2^43313761 is an apocalyptic number.

It is an amenable number.

43313761 is a deficient number, since it is larger than the sum of its proper divisors (1883231).

43313761 is a wasteful number, since it uses less digits than its factorization.

43313761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883230.

The product of its digits is 4536, while the sum is 28.

The square root of 43313761 is about 6581.3190927047. The cubic root of 43313761 is about 351.1898578656.

The spelling of 43313761 in words is "forty-three million, three hundred thirteen thousand, seven hundred sixty-one".