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164680231 = 4113130661
BaseRepresentation
bin10011101000011…
…01001000100111
3102110212121210211
421310031020213
5314124231411
624201400251
74036521202
oct1164151047
9373777724
10164680231
1184a59771
1247199087
132816bb31
1417c2a939
15e6ce221
hex9d0d227

164680231 has 8 divisors (see below), whose sum is σ = 169990128. Its totient is φ = 159432000.

The previous prime is 164680223. The next prime is 164680259. The reversal of 164680231 is 132086461.

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 not a de Polignac number, because 164680231 - 23 = 164680223 is a prime.

It is a super-2 number, since 2×1646802312 = 54239156964426722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164680193 and 164680202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164680631) 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, 9960 + ... + 20701.

It is an arithmetic number, because the mean of its divisors is an integer number (21248766).

Almost surely, 2164680231 is an apocalyptic number.

164680231 is a deficient number, since it is larger than the sum of its proper divisors (5309897).

164680231 is a wasteful number, since it uses less digits than its factorization.

164680231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30833.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 164680231 is about 12832.7795508222. The cubic root of 164680231 is about 548.1261087129.

The spelling of 164680231 in words is "one hundred sixty-four million, six hundred eighty thousand, two hundred thirty-one".

Divisors: 1 41 131 5371 30661 1257101 4016591 164680231