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85307021304331 = 139613719577729
BaseRepresentation
bin10011011001011000010110…
…101100111010001000001011
3102012001021022222201101121211
4103121120112230322020023
542140132234423214311
6501233300553113551
723653141340655151
oct2331302654721013
9365037288641554
1085307021304331
11251aa560638852
1296990a49b88b7
13387a5575aa018
14170cc4bb833d1
159ce070e40821
hex4d9616b3a20b

85307021304331 has 4 divisors (see below), whose sum is σ = 85920740882200. Its totient is φ = 84693301726464.

The previous prime is 85307021304313. The next prime is 85307021304347. The reversal of 85307021304331 is 13340312070358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85307021304331 - 25 = 85307021304299 is a prime.

It is a super-3 number, since 3×853070213043313 (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85307021304391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306859788726 + ... + 306859789003.

It is an arithmetic number, because the mean of its divisors is an integer number (21480185220550).

Almost surely, 285307021304331 is an apocalyptic number.

85307021304331 is a deficient number, since it is larger than the sum of its proper divisors (613719577869).

85307021304331 is a wasteful number, since it uses less digits than its factorization.

85307021304331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613719577868.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 85307021304331 its reverse (13340312070358), we get a palindrome (98647333374689).

The spelling of 85307021304331 in words is "eighty-five trillion, three hundred seven billion, twenty-one million, three hundred four thousand, three hundred thirty-one".

Divisors: 1 139 613719577729 85307021304331