83111138 has 8 divisors (see below), whose sum is σ = 136000080. Its totient is φ = 37777780.

The previous prime is 83111123. The next prime is 83111143.

83111138 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×83111138² = 13814922519310088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888868 + ... + 1888911.

It is an arithmetic number, because the mean of its divisors is an integer number (17000010).

Almost surely, 2^83111138 is an apocalyptic number.

83111138 is a deficient number, since it is larger than the sum of its proper divisors (52888942).

83111138 is a wasteful number, since it uses less digits than its factorization.

83111138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777792.

The product of its digits is 576, while the sum is 26.

The square root of 83111138 is about 9116.5310288508. The cubic root of 83111138 is about 436.4016758163.

It can be divided in two parts, 8311 and 1138, that added together give a palindrome (9449).

The spelling of 83111138 in words is "eighty-three million, one hundred eleven thousand, one hundred thirty-eight".