83105281 has 8 divisors (see below), whose sum is σ = 95583680. Its totient is φ = 70778448.

The previous prime is 83105261. The next prime is 83105291. The reversal of 83105281 is 18250138.

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 83105281 - 2¹⁵ = 83072513 is a prime.

It is a super-2 number, since 2×83105281² = 13812975460177922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83105251) 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, 36711 + ... + 38908.

It is an arithmetic number, because the mean of its divisors is an integer number (11947960).

Almost surely, 2^83105281 is an apocalyptic number.

It is an amenable number.

83105281 is a deficient number, since it is larger than the sum of its proper divisors (12478399).

83105281 is a wasteful number, since it uses less digits than its factorization.

83105281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75783.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 83105281 is about 9116.2097935491. The cubic root of 83105281 is about 436.3914242234.

The spelling of 83105281 in words is "eighty-three million, one hundred five thousand, two hundred eighty-one".