83281871 has 4 divisors (see below), whose sum is σ = 84524952. Its totient is φ = 82038792.

The previous prime is 83281859. The next prime is 83281907. The reversal of 83281871 is 17818238.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83281871 - 2¹⁴ = 83265487 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 (83281801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621440 + ... + 621573.

It is an arithmetic number, because the mean of its divisors is an integer number (21131238).

Almost surely, 2^83281871 is an apocalyptic number.

83281871 is a deficient number, since it is larger than the sum of its proper divisors (1243081).

83281871 is a wasteful number, since it uses less digits than its factorization.

83281871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243080.

The product of its digits is 21504, while the sum is 38.

The square root of 83281871 is about 9125.8901483636. The cubic root of 83281871 is about 436.7003008751.

The spelling of 83281871 in words is "eighty-three million, two hundred eighty-one thousand, eight hundred seventy-one".