83931071 has 16 divisors (see below), whose sum is σ = 102144000. Its totient is φ = 68806584.

The previous prime is 83931061. The next prime is 83931073. The reversal of 83931071 is 17013938.

It is not a de Polignac number, because 83931071 - 2¹⁰ = 83930047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83931073) 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, 2570 + ... + 13208.

It is an arithmetic number, because the mean of its divisors is an integer number (6384000).

Almost surely, 2^83931071 is an apocalyptic number.

83931071 is a deficient number, since it is larger than the sum of its proper divisors (18212929).

83931071 is a wasteful number, since it uses less digits than its factorization.

83931071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683 (or 10669 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 83931071 is about 9161.3902329286. The cubic root of 83931071 is about 437.8320891936.

The spelling of 83931071 in words is "eighty-three million, nine hundred thirty-one thousand, seventy-one".