82103971 has 4 divisors (see below), whose sum is σ = 83850912. Its totient is φ = 80357032.

The previous prime is 82103941. The next prime is 82103993. The reversal of 82103971 is 17930128.

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 82103971 - 2⁹ = 82103459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82103941) 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, 873400 + ... + 873493.

It is an arithmetic number, because the mean of its divisors is an integer number (20962728).

Almost surely, 2^82103971 is an apocalyptic number.

82103971 is a deficient number, since it is larger than the sum of its proper divisors (1746941).

82103971 is a wasteful number, since it uses less digits than its factorization.

82103971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746940.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 82103971 is about 9061.1241576308. The cubic root of 82103971 is about 434.6316889466.

The spelling of 82103971 in words is "eighty-two million, one hundred three thousand, nine hundred seventy-one".