1161316201 has 2 divisors, whose sum is σ = 1161316202. Its totient is φ = 1161316200.

The previous prime is 1161316187. The next prime is 1161316229. The reversal of 1161316201 is 1026131611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1038128400 + 123187801 = 32220^2 + 11099^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161316201 - 2²³ = 1152927593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161316241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580658100 + 580658101.

It is an arithmetic number, because the mean of its divisors is an integer number (580658101).

Almost surely, 2^1161316201 is an apocalyptic number.

It is an amenable number.

1161316201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161316201 is an equidigital number, since it uses as much as digits as its factorization.

1161316201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1161316201 is about 34078.0897498671. The cubic root of 1161316201 is about 1051.1148253009.

Adding to 1161316201 its reverse (1026131611), we get a palindrome (2187447812).

The spelling of 1161316201 in words is "one billion, one hundred sixty-one million, three hundred sixteen thousand, two hundred one".