82507311 has 12 divisors (see below), whose sum is σ = 121197960. Its totient is φ = 54072240.

The previous prime is 82507267. The next prime is 82507331. The reversal of 82507311 is 11370528.

It is not a de Polignac number, because 82507311 - 2⁶ = 82507247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82507331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77160 + ... + 78221.

It is an arithmetic number, because the mean of its divisors is an integer number (10099830).

Almost surely, 2^82507311 is an apocalyptic number.

82507311 is a deficient number, since it is larger than the sum of its proper divisors (38690649).

82507311 is a wasteful number, since it uses less digits than its factorization.

82507311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155446 (or 155443 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 82507311 is about 9083.3535106810. The cubic root of 82507311 is about 435.3422435450.

Adding to 82507311 its reverse (11370528), we get a palindrome (93877839).

The spelling of 82507311 in words is "eighty-two million, five hundred seven thousand, three hundred eleven".