1171423116 has 36 divisors (see below), whose sum is σ = 3001667032. Its totient is φ = 385124544.

The previous prime is 1171423081. The next prime is 1171423117. The reversal of 1171423116 is 6113241711.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1171423116.

It is not an unprimeable number, because it can be changed into a prime (1171423117) 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 11 ways as a sum of consecutive naturals, for example, 220246 + ... + 225501.

Almost surely, 2^1171423116 is an apocalyptic number.

It is an amenable number.

1171423116 is an abundant number, since it is smaller than the sum of its proper divisors (1830243916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171423116 is a wasteful number, since it uses less digits than its factorization.

1171423116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445830 (or 445825 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1171423116 is about 34226.0590194080. The cubic root of 1171423116 is about 1054.1552999911.

Adding to 1171423116 its reverse (6113241711), we get a palindrome (7284664827).

The spelling of 1171423116 in words is "one billion, one hundred seventy-one million, four hundred twenty-three thousand, one hundred sixteen".