82443131 has 8 divisors (see below), whose sum is σ = 83767200. Its totient is φ = 81129600.

The previous prime is 82443107. The next prime is 82443139. The reversal of 82443131 is 13134428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82443131 is a prime.

It is a super-2 number, since 2×82443131² = 13593739698166322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82443131.

It is not an unprimeable number, because it can be changed into a prime (82443139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13955 + ... + 18963.

It is an arithmetic number, because the mean of its divisors is an integer number (10470900).

Almost surely, 2^82443131 is an apocalyptic number.

82443131 is a deficient number, since it is larger than the sum of its proper divisors (1324069).

82443131 is a wasteful number, since it uses less digits than its factorization.

82443131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269.

The product of its digits is 2304, while the sum is 26.

The square root of 82443131 is about 9079.8199872024. The cubic root of 82443131 is about 435.2293343066.

Adding to 82443131 its reverse (13134428), we get a palindrome (95577559).

The spelling of 82443131 in words is "eighty-two million, four hundred forty-three thousand, one hundred thirty-one".