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806136231 = 31731553249
BaseRepresentation
bin110000000011001…
…010100110100111
32002011212222000110
4300003022212213
53122332324411
6211554144103
725656021255
oct6003124647
92064788013
10806136231
1138405209a
121a5b82033
13cb020bb4
14790c55d5
154ab8a2a6
hex300ca9a7

806136231 has 8 divisors (see below), whose sum is σ = 1081062000. Its totient is φ = 534317312.

The previous prime is 806136211. The next prime is 806136239. The reversal of 806136231 is 132631608.

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

It is a cyclic number.

It is not a de Polignac number, because 806136231 - 218 = 805874087 is a prime.

It is a super-2 number, since 2×8061362312 = 1299711245861770722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806136239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 776106 + ... + 777143.

It is an arithmetic number, because the mean of its divisors is an integer number (135132750).

Almost surely, 2806136231 is an apocalyptic number.

806136231 is a deficient number, since it is larger than the sum of its proper divisors (274925769).

806136231 is a wasteful number, since it uses less digits than its factorization.

806136231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553425.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 806136231 is about 28392.5382979402. The cubic root of 806136231 is about 930.6852124440.

Adding to 806136231 its reverse (132631608), we get a palindrome (938767839).

The spelling of 806136231 in words is "eight hundred six million, one hundred thirty-six thousand, two hundred thirty-one".

Divisors: 1 3 173 519 1553249 4659747 268712077 806136231