261040283 has 16 divisors (see below), whose sum is σ = 302025216. Its totient is φ = 220993920.

The previous prime is 261040237. The next prime is 261040309. The reversal of 261040283 is 382040162.

It is not a de Polignac number, because 261040283 - 2²⁴ = 244263067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261040583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413378 + ... + 414008.

It is an arithmetic number, because the mean of its divisors is an integer number (18876576).

Almost surely, 2^261040283 is an apocalyptic number.

261040283 is a deficient number, since it is larger than the sum of its proper divisors (40984933).

261040283 is a wasteful number, since it uses less digits than its factorization.

261040283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 261040283 is about 16156.7411008532. The cubic root of 261040283 is about 639.1005292613.

The spelling of 261040283 in words is "two hundred sixty-one million, forty thousand, two hundred eighty-three".