2991313 has 4 divisors (see below), whose sum is σ = 3221428. Its totient is φ = 2761200.

The previous prime is 2991299. The next prime is 2991353. The reversal of 2991313 is 3131992.

2991313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 2455489 = 732^2 + 1567^2 .

It is not a de Polignac number, because 2991313 - 2²¹ = 894161 is a prime.

It is a Duffinian number.

2991313 is a modest number, since divided by 1313 gives 299 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2991353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115038 + ... + 115063.

It is an arithmetic number, because the mean of its divisors is an integer number (805357).

2^2991313 is an apocalyptic number.

It is an amenable number.

2991313 is a deficient number, since it is larger than the sum of its proper divisors (230115).

2991313 is a wasteful number, since it uses less digits than its factorization.

2991313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230114.

The product of its digits is 1458, while the sum is 28.

The square root of 2991313 is about 1729.5412686606. The cubic root of 2991313 is about 144.0856133129.

The spelling of 2991313 in words is "two million, nine hundred ninety-one thousand, three hundred thirteen".