230761577581 has 2 divisors, whose sum is σ = 230761577582. Its totient is φ = 230761577580.

The previous prime is 230761577569. The next prime is 230761577611. The reversal of 230761577581 is 185775167032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187376436900 + 43385140681 = 432870^2 + 208291^2 .

It is a cyclic number.

It is not a de Polignac number, because 230761577581 - 2¹¹ = 230761575533 is a prime.

It is a super-2 number, since 2×230761577581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230761577521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115380788790 + 115380788791.

It is an arithmetic number, because the mean of its divisors is an integer number (115380788791).

Almost surely, 2^230761577581 is an apocalyptic number.

It is an amenable number.

230761577581 is a deficient number, since it is larger than the sum of its proper divisors (1).

230761577581 is an equidigital number, since it uses as much as digits as its factorization.

230761577581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469600, while the sum is 52.

The spelling of 230761577581 in words is "two hundred thirty billion, seven hundred sixty-one million, five hundred seventy-seven thousand, five hundred eighty-one".