281087087 has 8 divisors (see below), whose sum is σ = 288562560. Its totient is φ = 273654360.

The previous prime is 281087077. The next prime is 281087089. The reversal of 281087087 is 780780182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281087087 - 2¹⁰ = 281086063 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 (281087089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2864 + ... + 23882.

It is an arithmetic number, because the mean of its divisors is an integer number (36070320).

Almost surely, 2^281087087 is an apocalyptic number.

281087087 is a deficient number, since it is larger than the sum of its proper divisors (7475473).

281087087 is a wasteful number, since it uses less digits than its factorization.

281087087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21373.

The product of its (nonzero) digits is 50176, while the sum is 41.

The square root of 281087087 is about 16765.6520004442. The cubic root of 281087087 is about 655.0588195726.

The spelling of 281087087 in words is "two hundred eighty-one million, eighty-seven thousand, eighty-seven".