261341843 has 12 divisors (see below), whose sum is σ = 307025712. Its totient is φ = 221785200.

The previous prime is 261341837. The next prime is 261341849. The reversal of 261341843 is 348143162.

It is an interprime number because it is at equal distance from previous prime (261341837) and next prime (261341849).

It is not a de Polignac number, because 261341843 - 2¹⁶ = 261276307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261341849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21455 + ... + 31352.

It is an arithmetic number, because the mean of its divisors is an integer number (25585476).

Almost surely, 2^261341843 is an apocalyptic number.

261341843 is a deficient number, since it is larger than the sum of its proper divisors (45683869).

261341843 is a wasteful number, since it uses less digits than its factorization.

261341843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52922 (or 52915 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 261341843 is about 16166.0707347209. The cubic root of 261341843 is about 639.3465359780.

The spelling of 261341843 in words is "two hundred sixty-one million, three hundred forty-one thousand, eight hundred forty-three".