265304243 has 2 divisors, whose sum is σ = 265304244. Its totient is φ = 265304242.

The previous prime is 265304233. The next prime is 265304257. The reversal of 265304243 is 342403562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265304243 - 2¹⁴ = 265287859 is a prime.

It is not a weakly prime, because it can be changed into another prime (265304203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132652121 + 132652122.

It is an arithmetic number, because the mean of its divisors is an integer number (132652122).

Almost surely, 2^265304243 is an apocalyptic number.

265304243 is a deficient number, since it is larger than the sum of its proper divisors (1).

265304243 is an equidigital number, since it uses as much as digits as its factorization.

265304243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 265304243 is about 16288.1626649540. The cubic root of 265304243 is about 642.5615462851.

The spelling of 265304243 in words is "two hundred sixty-five million, three hundred four thousand, two hundred forty-three".