2308261 has 2 divisors, whose sum is σ = 2308262. Its totient is φ = 2308260.

The previous prime is 2308247. The next prime is 2308279. The reversal of 2308261 is 1628032.

2308261 = T₁₂₃₉ + T₁₂₄₀ + T₁₂₄₁.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2307361 + 900 = 1519^2 + 30^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2308261 is a prime.

It is a Chen prime.

It is equal to p₁₇₀₀₇₇ and since 2308261 and 170077 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2308231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154130 + 1154131.

It is an arithmetic number, because the mean of its divisors is an integer number (1154131).

2^2308261 is an apocalyptic number.

2308261 is the 1241-st centered triangular number.

It is an amenable number.

2308261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2308261 is an equidigital number, since it uses as much as digits as its factorization.

2308261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2308261 is about 1519.2962186486. The cubic root of 2308261 is about 132.1584606014.

The spelling of 2308261 in words is "two million, three hundred eight thousand, two hundred sixty-one".