230636609281 has 8 divisors (see below), whose sum is σ = 252449656424. Its totient is φ = 209405243520.

The previous prime is 230636609263. The next prime is 230636609293. The reversal of 230636609281 is 182906636032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12384128656 + 218252480625 = 111284^2 + 467175^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230636609281 - 2¹³ = 230636601089 is a prime.

It is a super-2 number, since 2×230636609281² (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 (230636609221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145419516 + ... + 145421101.

It is an arithmetic number, because the mean of its divisors is an integer number (31556207053).

Almost surely, 2^230636609281 is an apocalyptic number.

It is an amenable number.

230636609281 is a deficient number, since it is larger than the sum of its proper divisors (21813047143).

230636609281 is a wasteful number, since it uses less digits than its factorization.

230636609281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290840691.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 230636609281 in words is "two hundred thirty billion, six hundred thirty-six million, six hundred nine thousand, two hundred eighty-one".