230523556513 has 4 divisors (see below), whose sum is σ = 230864064660. Its totient is φ = 230183048368.

The previous prime is 230523556477. The next prime is 230523556531. The reversal of 230523556513 is 315655325032.

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 229471657024 + 1051899489 = 479032^2 + 32433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230523556513 is a prime.

It is a super-2 number, since 2×230523556513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230523556313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170253058 + ... + 170254411.

It is an arithmetic number, because the mean of its divisors is an integer number (57716016165).

Almost surely, 2^230523556513 is an apocalyptic number.

It is an amenable number.

230523556513 is a deficient number, since it is larger than the sum of its proper divisors (340508147).

230523556513 is an equidigital number, since it uses as much as digits as its factorization.

230523556513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340508146.

The product of its (nonzero) digits is 405000, while the sum is 40.

The spelling of 230523556513 in words is "two hundred thirty billion, five hundred twenty-three million, five hundred fifty-six thousand, five hundred thirteen".