2291305 has 16 divisors (see below), whose sum is σ = 2937600. Its totient is φ = 1710720.

The previous prime is 2291287. The next prime is 2291327. The reversal of 2291305 is 5031922.

It is not a de Polignac number, because 2291305 - 2⁵ = 2291273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8320 + ... + 8590.

It is an arithmetic number, because the mean of its divisors is an integer number (183600).

2^2291305 is an apocalyptic number.

It is an amenable number.

2291305 is a deficient number, since it is larger than the sum of its proper divisors (646295).

2291305 is a wasteful number, since it uses less digits than its factorization.

2291305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2291305 is about 1513.7057177668. The cubic root of 2291305 is about 131.8340622240.

The spelling of 2291305 in words is "two million, two hundred ninety-one thousand, three hundred five".