1161211317 has 8 divisors (see below), whose sum is σ = 1769464896. Its totient is φ = 663549312.

The previous prime is 1161211267. The next prime is 1161211321. The reversal of 1161211317 is 7131121611.

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

It is not a de Polignac number, because 1161211317 - 2⁶ = 1161211253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161211817) 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 in 7 ways as a sum of consecutive naturals, for example, 27647868 + ... + 27647909.

It is an arithmetic number, because the mean of its divisors is an integer number (221183112).

Almost surely, 2^1161211317 is an apocalyptic number.

It is an amenable number.

1161211317 is a deficient number, since it is larger than the sum of its proper divisors (608253579).

1161211317 is an equidigital number, since it uses as much as digits as its factorization.

1161211317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55295787.

The product of its digits is 252, while the sum is 24.

The square root of 1161211317 is about 34076.5508377829. The cubic root of 1161211317 is about 1051.0831806187.

Adding to 1161211317 its reverse (7131121611), we get a palindrome (8292332928).

The spelling of 1161211317 in words is "one billion, one hundred sixty-one million, two hundred eleven thousand, three hundred seventeen".