1311941 has 8 divisors (see below), whose sum is σ = 1399320. Its totient is φ = 1225728.

The previous prime is 1311923. The next prime is 1311967. The reversal of 1311941 is 1491131.

It can be written as a sum of positive squares in 4 ways, for example, as 519841 + 792100 = 721^2 + 890^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311901) 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, 3725 + ... + 4061.

It is an arithmetic number, because the mean of its divisors is an integer number (174915).

2^1311941 is an apocalyptic number.

It is an amenable number.

1311941 is a deficient number, since it is larger than the sum of its proper divisors (87379).

1311941 is a wasteful number, since it uses less digits than its factorization.

1311941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its digits is 108, while the sum is 20.

The square root of 1311941 is about 1145.3999301554. The cubic root of 1311941 is about 109.4724324728.

The spelling of 1311941 in words is "one million, three hundred eleven thousand, nine hundred forty-one".