1205317241 has 2 divisors, whose sum is σ = 1205317242. Its totient is φ = 1205317240.

The previous prime is 1205317189. The next prime is 1205317259. The reversal of 1205317241 is 1427135021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1195707241 + 9610000 = 34579^2 + 3100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205317241 - 2¹⁴ = 1205300857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1205317241.

It is not a weakly prime, because it can be changed into another prime (1205317741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602658620 + 602658621.

It is an arithmetic number, because the mean of its divisors is an integer number (602658621).

Almost surely, 2^1205317241 is an apocalyptic number.

It is an amenable number.

1205317241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205317241 is an equidigital number, since it uses as much as digits as its factorization.

1205317241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1205317241 is about 34717.6790842936. The cubic root of 1205317241 is about 1064.2258154256.

The spelling of 1205317241 in words is "one billion, two hundred five million, three hundred seventeen thousand, two hundred forty-one".