1171312 has 20 divisors (see below), whose sum is σ = 2389480. Its totient is φ = 554688.

The previous prime is 1171301. The next prime is 1171319. The reversal of 1171312 is 2131711.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (119474).

2^1171312 is an apocalyptic number.

It is an amenable number.

1171312 is an abundant number, since it is smaller than the sum of its proper divisors (1218168).

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

1171312 is a wasteful number, since it uses less digits than its factorization.

1171312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880 (or 3874 counting only the distinct ones).

The product of its digits is 42, while the sum is 16.

The square root of 1171312 is about 1082.2716849294. The cubic root of 1171312 is about 105.4121968105.

The spelling of 1171312 in words is "one million, one hundred seventy-one thousand, three hundred twelve".