1161302111 has 8 divisors (see below), whose sum is σ = 1169344800. Its totient is φ = 1153281888.

The previous prime is 1161302041. The next prime is 1161302183. The reversal of 1161302111 is 1112031611.

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 1161302111 - 2¹⁰ = 1161301087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161302111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161302411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105605 + ... + 116081.

It is an arithmetic number, because the mean of its divisors is an integer number (146168100).

Almost surely, 2^1161302111 is an apocalyptic number.

1161302111 is a deficient number, since it is larger than the sum of its proper divisors (8042689).

1161302111 is a wasteful number, since it uses less digits than its factorization.

1161302111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11233.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1161302111 is about 34077.8830181688. The cubic root of 1161302111 is about 1051.1105743003.

Adding to 1161302111 its reverse (1112031611), we get a palindrome (2273333722).

The spelling of 1161302111 in words is "one billion, one hundred sixty-one million, three hundred two thousand, one hundred eleven".