82106512231 has 2 divisors, whose sum is σ = 82106512232. Its totient is φ = 82106512230.

The previous prime is 82106512139. The next prime is 82106512237. The reversal of 82106512231 is 13221560128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82106512231 - 2²³ = 82098123623 is a prime.

It is a super-2 number, since 2×82106512231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82106512193 and 82106512202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82106512237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41053256115 + 41053256116.

It is an arithmetic number, because the mean of its divisors is an integer number (41053256116).

Almost surely, 2^82106512231 is an apocalyptic number.

82106512231 is a deficient number, since it is larger than the sum of its proper divisors (1).

82106512231 is an equidigital number, since it uses as much as digits as its factorization.

82106512231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 82106512231 in words is "eighty-two billion, one hundred six million, five hundred twelve thousand, two hundred thirty-one".