2150565731 has 4 divisors (see below), whose sum is σ = 2224723200. Its totient is φ = 2076408264.

The previous prime is 2150565727. The next prime is 2150565733. The reversal of 2150565731 is 1375650512.

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

It is a cyclic number.

It is not a de Polignac number, because 2150565731 - 2² = 2150565727 is a prime.

It is a super-2 number, since 2×2150565731² = 9249865926703128722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2150565691 and 2150565700.

It is not an unprimeable number, because it can be changed into a prime (2150565733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37078691 + ... + 37078748.

It is an arithmetic number, because the mean of its divisors is an integer number (556180800).

Almost surely, 2^2150565731 is an apocalyptic number.

2150565731 is a deficient number, since it is larger than the sum of its proper divisors (74157469).

2150565731 is an equidigital number, since it uses as much as digits as its factorization.

2150565731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74157468.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 2150565731 is about 46374.1925104901. The cubic root of 2150565731 is about 1290.7760750877.

The spelling of 2150565731 in words is "two billion, one hundred fifty million, five hundred sixty-five thousand, seven hundred thirty-one".