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230109311 = 3134921269
BaseRepresentation
bin11011011011100…
…11000001111111
3121000222202122002
431231303001333
5432401444221
634500012515
75462616425
oct1555630177
9530882562
10230109311
11108988593
126509113b
1338899c73
14227bd115
151530580b
hexdb7307f

230109311 has 8 divisors (see below), whose sum is σ = 238224000. Its totient is φ = 222037920.

The previous prime is 230109251. The next prime is 230109337. The reversal of 230109311 is 113901032.

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 230109311 - 226 = 163000447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230109371) 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, 185 + ... + 21453.

It is an arithmetic number, because the mean of its divisors is an integer number (29778000).

Almost surely, 2230109311 is an apocalyptic number.

230109311 is a deficient number, since it is larger than the sum of its proper divisors (8114689).

230109311 is a wasteful number, since it uses less digits than its factorization.

230109311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21649.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 230109311 is about 15169.3543369519. The cubic root of 230109311 is about 612.7896159720.

The spelling of 230109311 in words is "two hundred thirty million, one hundred nine thousand, three hundred eleven".

Divisors: 1 31 349 10819 21269 659339 7422881 230109311