82158311 has 2 divisors, whose sum is σ = 82158312. Its totient is φ = 82158310.

The previous prime is 82158287. The next prime is 82158317. The reversal of 82158311 is 11385128.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82158311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82158317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41079155 + 41079156.

It is an arithmetic number, because the mean of its divisors is an integer number (41079156).

Almost surely, 2^82158311 is an apocalyptic number.

82158311 is a deficient number, since it is larger than the sum of its proper divisors (1).

82158311 is an equidigital number, since it uses as much as digits as its factorization.

82158311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 29.

The square root of 82158311 is about 9064.1221858490. The cubic root of 82158311 is about 434.7275538894.

The spelling of 82158311 in words is "eighty-two million, one hundred fifty-eight thousand, three hundred eleven".