1205315233 has 2 divisors, whose sum is σ = 1205315234. Its totient is φ = 1205315232.

The previous prime is 1205315231. The next prime is 1205315239. The reversal of 1205315233 is 3325135021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 899520064 + 305795169 = 29992^2 + 17487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205315233 - 2¹ = 1205315231 is a prime.

Together with 1205315231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1205315198 and 1205315207.

It is not a weakly prime, because it can be changed into another prime (1205315231) 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 as a sum of consecutive naturals, namely, 602657616 + 602657617.

It is an arithmetic number, because the mean of its divisors is an integer number (602657617).

Almost surely, 2^1205315233 is an apocalyptic number.

It is an amenable number.

1205315233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205315233 is an equidigital number, since it uses as much as digits as its factorization.

1205315233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1205315233 is about 34717.6501652978. The cubic root of 1205315233 is about 1064.2252244424.

The spelling of 1205315233 in words is "one billion, two hundred five million, three hundred fifteen thousand, two hundred thirty-three".