1311541 has 8 divisors (see below), whose sum is σ = 1635264. Its totient is φ = 1021920.

The previous prime is 1311523. The next prime is 1311547. The reversal of 1311541 is 1451131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311541 - 2⁵ = 1311509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8440 + ... + 8593.

It is an arithmetic number, because the mean of its divisors is an integer number (204408).

2^1311541 is an apocalyptic number.

1311541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1311541 is a deficient number, since it is larger than the sum of its proper divisors (323723).

1311541 is a wasteful number, since it uses less digits than its factorization.

1311541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17051.

The product of its digits is 60, while the sum is 16.

The square root of 1311541 is about 1145.2253053439. The cubic root of 1311541 is about 109.4613055944.

Adding to 1311541 its reverse (1451131), we get a palindrome (2762672).

The spelling of 1311541 in words is "one million, three hundred eleven thousand, five hundred forty-one".