85139882231 has 8 divisors (see below), whose sum is σ = 85988780928. Its totient is φ = 84291100000.

The previous prime is 85139882221. The next prime is 85139882249. The reversal of 85139882231 is 13228893158.

It is a happy number.

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-85139882231 is a prime.

It is a super-2 number, since 2×85139882231² (a number of 23 digits) 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 85139882231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85139882221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2782586 + ... + 2813016.

It is an arithmetic number, because the mean of its divisors is an integer number (10748597616).

Almost surely, 2^85139882231 is an apocalyptic number.

85139882231 is a deficient number, since it is larger than the sum of its proper divisors (848898697).

85139882231 is a wasteful number, since it uses less digits than its factorization.

85139882231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58233.

The product of its digits is 829440, while the sum is 50.

The spelling of 85139882231 in words is "eighty-five billion, one hundred thirty-nine million, eight hundred eighty-two thousand, two hundred thirty-one".