2291731690215 has 16 divisors (see below), whose sum is σ = 4000113495936. Its totient is φ = 1111142637600.

The previous prime is 2291731690207. The next prime is 2291731690291. The reversal of 2291731690215 is 5120961371922.

It is not a de Polignac number, because 2291731690215 - 2³ = 2291731690207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6944641321 + ... + 6944641650.

It is an arithmetic number, because the mean of its divisors is an integer number (250007093496).

Almost surely, 2^{2291731690215} is an apocalyptic number.

2291731690215 is a deficient number, since it is larger than the sum of its proper divisors (1708381805721).

2291731690215 is a wasteful number, since it uses less digits than its factorization.

2291731690215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889282990.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 2291731690215 in words is "two trillion, two hundred ninety-one billion, seven hundred thirty-one million, six hundred ninety thousand, two hundred fifteen".