82811371 has 2 divisors, whose sum is σ = 82811372. Its totient is φ = 82811370.

The previous prime is 82811299. The next prime is 82811383. The reversal of 82811371 is 17311828.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82811371 - 2¹³ = 82803179 is a prime.

It is a Chen prime.

It is equal to p_4823914 and since 82811371 and 4823914 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (82811171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41405685 + 41405686.

It is an arithmetic number, because the mean of its divisors is an integer number (41405686).

Almost surely, 2^82811371 is an apocalyptic number.

82811371 is a deficient number, since it is larger than the sum of its proper divisors (1).

82811371 is an equidigital number, since it uses as much as digits as its factorization.

82811371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 82811371 is about 9100.0753293585. The cubic root of 82811371 is about 435.8763695006.

The spelling of 82811371 in words is "eighty-two million, eight hundred eleven thousand, three hundred seventy-one".