230640417533 has 4 divisors (see below), whose sum is σ = 231258756828. Its totient is φ = 230022078240.

The previous prime is 230640417503. The next prime is 230640417559. The reversal of 230640417533 is 335714046032.

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 173940711844 + 56699705689 = 417062^2 + 238117^2 .

It is a cyclic number.

It is not a de Polignac number, because 230640417533 - 2¹⁰ = 230640416509 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 (230640417503) 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, 309169088 + ... + 309169833.

It is an arithmetic number, because the mean of its divisors is an integer number (57814689207).

Almost surely, 2^230640417533 is an apocalyptic number.

It is an amenable number.

230640417533 is a deficient number, since it is larger than the sum of its proper divisors (618339295).

230640417533 is an equidigital number, since it uses as much as digits as its factorization.

230640417533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618339294.

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 230640417533 in words is "two hundred thirty billion, six hundred forty million, four hundred seventeen thousand, five hundred thirty-three".