1171689312 has 24 divisors (see below), whose sum is σ = 3075684696. Its totient is φ = 390563072.

The previous prime is 1171689307. The next prime is 1171689331. The reversal of 1171689312 is 2139861711.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6102453 + ... + 6102644.

It is an arithmetic number, because the mean of its divisors is an integer number (128153529).

Almost surely, 2^1171689312 is an apocalyptic number.

1171689312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1171689312 is an abundant number, since it is smaller than the sum of its proper divisors (1903995384).

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

1171689312 is a wasteful number, since it uses less digits than its factorization.

1171689312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12205110 (or 12205102 counting only the distinct ones).

The product of its digits is 18144, while the sum is 39.

The square root of 1171689312 is about 34229.9475897934. The cubic root of 1171689312 is about 1054.2351432369.

The spelling of 1171689312 in words is "one billion, one hundred seventy-one million, six hundred eighty-nine thousand, three hundred twelve".