43115013 has 6 divisors (see below), whose sum is σ = 62277254. Its totient is φ = 28743336.

The previous prime is 43115011. The next prime is 43115029. The reversal of 43115013 is 31051134.

It can be written as a sum of positive squares in only one way, i.e., 38526849 + 4588164 = 6207^2 + 2142^2 .

It is not a de Polignac number, because 43115013 - 2¹ = 43115011 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 (43115011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2395270 + ... + 2395287.

Almost surely, 2^43115013 is an apocalyptic number.

It is an amenable number.

43115013 is a deficient number, since it is larger than the sum of its proper divisors (19162241).

43115013 is a wasteful number, since it uses less digits than its factorization.

43115013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790563 (or 4790560 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 43115013 is about 6566.2023270685. The cubic root of 43115013 is about 350.6518817027.

Adding to 43115013 its reverse (31051134), we get a palindrome (74166147).

The spelling of 43115013 in words is "forty-three million, one hundred fifteen thousand, thirteen".