81996283 has 2 divisors, whose sum is σ = 81996284. Its totient is φ = 81996282.

The previous prime is 81996221. The next prime is 81996307. The reversal of 81996283 is 38269918.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81996283 is a prime.

It is not a weakly prime, because it can be changed into another prime (81996203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40998141 + 40998142.

It is an arithmetic number, because the mean of its divisors is an integer number (40998142).

Almost surely, 2^81996283 is an apocalyptic number.

81996283 is a deficient number, since it is larger than the sum of its proper divisors (1).

81996283 is an equidigital number, since it uses as much as digits as its factorization.

81996283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 81996283 is about 9055.1798988203. The cubic root of 81996283 is about 434.4415840721.

The spelling of 81996283 in words is "eighty-one million, nine hundred ninety-six thousand, two hundred eighty-three".