5231365613 has 4 divisors (see below), whose sum is σ = 5539093020. Its totient is φ = 4923638208.

The previous prime is 5231365609. The next prime is 5231365631. The reversal of 5231365613 is 3165631325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4913028649 + 318336964 = 70093^2 + 17842^2 .

It is a cyclic number.

It is not a de Polignac number, because 5231365613 - 2² = 5231365609 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 (5231365693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153863678 + ... + 153863711.

It is an arithmetic number, because the mean of its divisors is an integer number (1384773255).

Almost surely, 2^5231365613 is an apocalyptic number.

It is an amenable number.

5231365613 is a deficient number, since it is larger than the sum of its proper divisors (307727407).

5231365613 is a wasteful number, since it uses less digits than its factorization.

5231365613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307727406.

The product of its digits is 48600, while the sum is 35.

The square root of 5231365613 is about 72328.1799370066. The cubic root of 5231365613 is about 1735.9545791674.

Adding to 5231365613 its reverse (3165631325), we get a palindrome (8396996938).

The spelling of 5231365613 in words is "five billion, two hundred thirty-one million, three hundred sixty-five thousand, six hundred thirteen".