991341 has 24 divisors (see below), whose sum is σ = 1590680. Its totient is φ = 590976.

The previous prime is 991327. The next prime is 991343. The reversal of 991341 is 143199.

991341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 396900 + 594441 = 630^2 + 771^2 .

It is not a de Polignac number, because 991341 - 2¹¹ = 989293 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 991341.

It is not an unprimeable number, because it can be changed into a prime (991343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4215 + ... + 4443.

2⁹⁹¹³⁴¹ is an apocalyptic number.

It is an amenable number.

991341 is a deficient number, since it is larger than the sum of its proper divisors (599339).

991341 is a wasteful number, since it uses less digits than its factorization.

991341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 282 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 991341 is about 995.6610869166. The cubic root of 991341 is about 99.7105295437.

The spelling of 991341 in words is "nine hundred ninety-one thousand, three hundred forty-one".