82904131 has 2 divisors, whose sum is σ = 82904132. Its totient is φ = 82904130.

The previous prime is 82904113. The next prime is 82904141. The reversal of 82904131 is 13140928.

It is a happy number.

Together with previous prime (82904113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82904131 - 2⁹ = 82903619 is a prime.

It is a super-2 number, since 2×82904131² = 13746189873730322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82904131.

It is not a weakly prime, because it can be changed into another prime (82904111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41452065 + 41452066.

It is an arithmetic number, because the mean of its divisors is an integer number (41452066).

Almost surely, 2^82904131 is an apocalyptic number.

82904131 is a deficient number, since it is larger than the sum of its proper divisors (1).

82904131 is an equidigital number, since it uses as much as digits as its factorization.

82904131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 82904131 is about 9105.1705640257. The cubic root of 82904131 is about 436.0390557136.

It can be divided in two parts, 8290 and 4131, that added together give a palindrome (12421).

The spelling of 82904131 in words is "eighty-two million, nine hundred four thousand, one hundred thirty-one".