2309080327261 has 4 divisors (see below), whose sum is σ = 2309799894300. Its totient is φ = 2308360760224.

The previous prime is 2309080327243. The next prime is 2309080327291. The reversal of 2309080327261 is 1627230809032.

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 1544340571225 + 764739756036 = 1242715^2 + 874494^2 .

It is a cyclic number.

It is not a de Polignac number, because 2309080327261 - 2²³ = 2309071938653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309080327201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 359778706 + ... + 359785123.

It is an arithmetic number, because the mean of its divisors is an integer number (577449973575).

Almost surely, 2^{2309080327261} is an apocalyptic number.

It is an amenable number.

2309080327261 is a deficient number, since it is larger than the sum of its proper divisors (719567039).

2309080327261 is an equidigital number, since it uses as much as digits as its factorization.

2309080327261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719567038.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 2309080327261 in words is "two trillion, three hundred nine billion, eighty million, three hundred twenty-seven thousand, two hundred sixty-one".