1161366311 has 8 divisors (see below), whose sum is σ = 1327585440. Its totient is φ = 995224608.

The previous prime is 1161366259. The next prime is 1161366313. The reversal of 1161366311 is 1136631611.

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

It is not a de Polignac number, because 1161366311 - 2²⁶ = 1094257447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161366313) 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, 17465 + ... + 51261.

It is an arithmetic number, because the mean of its divisors is an integer number (165948180).

Almost surely, 2^1161366311 is an apocalyptic number.

1161366311 is a deficient number, since it is larger than the sum of its proper divisors (166219129).

1161366311 is an equidigital number, since it uses as much as digits as its factorization.

1161366311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38713.

The product of its digits is 1944, while the sum is 29.

The square root of 1161366311 is about 34078.8249650718. The cubic root of 1161366311 is about 1051.1299433788.

Adding to 1161366311 its reverse (1136631611), we get a palindrome (2297997922).

The spelling of 1161366311 in words is "one billion, one hundred sixty-one million, three hundred sixty-six thousand, three hundred eleven".