4243312513 has 4 divisors (see below), whose sum is σ = 4629068208. Its totient is φ = 3857556820.

The previous prime is 4243312499. The next prime is 4243312559. The reversal of 4243312513 is 3152133424.

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 4243312513 - 2⁹ = 4243312001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4243312613) 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, 192877831 + ... + 192877852.

It is an arithmetic number, because the mean of its divisors is an integer number (1157267052).

Almost surely, 2^4243312513 is an apocalyptic number.

It is an amenable number.

4243312513 is a deficient number, since it is larger than the sum of its proper divisors (385755695).

4243312513 is a wasteful number, since it uses less digits than its factorization.

4243312513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385755694.

The product of its digits is 8640, while the sum is 28.

The square root of 4243312513 is about 65140.7131754021. The cubic root of 4243312513 is about 1618.9558522011.

Adding to 4243312513 its reverse (3152133424), we get a palindrome (7395445937).

Subtracting from 4243312513 its reverse (3152133424), we obtain a square (1091179089 = 33033²).

It can be divided in two parts, 42433 and 12513, that added together give a triangular number (54946 = T₃₃₁).

The spelling of 4243312513 in words is "four billion, two hundred forty-three million, three hundred twelve thousand, five hundred thirteen".