1317912 has 32 divisors (see below), whose sum is σ = 3337200. Its totient is φ = 433664.

The previous prime is 1317887. The next prime is 1317917. The reversal of 1317912 is 2197131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828 + ... + 2444.

2^1317912 is an apocalyptic number.

1317912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1317912 is an abundant number, since it is smaller than the sum of its proper divisors (2019288).

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

1317912 is a wasteful number, since it uses less digits than its factorization.

1317912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 711 counting only the distinct ones).

The product of its digits is 378, while the sum is 24.

The square root of 1317912 is about 1148.0034843153. The cubic root of 1317912 is about 109.6382607463.

The spelling of 1317912 in words is "one million, three hundred seventeen thousand, nine hundred twelve".