43256013 has 4 divisors (see below), whose sum is σ = 57674688. Its totient is φ = 28837340.

The previous prime is 43256011. The next prime is 43256021. The reversal of 43256013 is 31065234.

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 43256013 - 2¹ = 43256011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43256011) 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, 7209333 + ... + 7209338.

It is an arithmetic number, because the mean of its divisors is an integer number (14418672).

Almost surely, 2^43256013 is an apocalyptic number.

It is an amenable number.

43256013 is a deficient number, since it is larger than the sum of its proper divisors (14418675).

43256013 is a wasteful number, since it uses less digits than its factorization.

43256013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14418674.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 43256013 is about 6576.9303630189. The cubic root of 43256013 is about 351.0337140204.

The spelling of 43256013 in words is "forty-three million, two hundred fifty-six thousand, thirteen".