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230031213111 = 32771392313109
BaseRepresentation
bin1101011000111011101…
…1011100001000110111
3210222202021022101012200
43112032323130020313
512232100442304421
6253401435115543
722422250023120
oct3261673341067
9728667271180
10230031213111
1189612694097
12386b8ba2bb3
13188cbcc246b
14b1c2733047
155eb4bb6726
hex358eedc237

230031213111 has 48 divisors (see below), whose sum is σ = 385209976320. Its totient is φ = 129552131520.

The previous prime is 230031213109. The next prime is 230031213131. The reversal of 230031213111 is 111312130032.

230031213111 is a `hidden beast` number, since 2 + 300 + 31 + 21 + 311 + 1 = 666.

It is not a de Polignac number, because 230031213111 - 21 = 230031213109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230031213101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17541025 + ... + 17554133.

It is an arithmetic number, because the mean of its divisors is an integer number (8025207840).

Almost surely, 2230031213111 is an apocalyptic number.

230031213111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230031213111 is a deficient number, since it is larger than the sum of its proper divisors (155178763209).

230031213111 is a wasteful number, since it uses less digits than its factorization.

230031213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17116 (or 17113 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 230031213111 its reverse (111312130032), we get a palindrome (341343343143).

The spelling of 230031213111 in words is "two hundred thirty billion, thirty-one million, two hundred thirteen thousand, one hundred eleven".

Divisors: 1 3 7 9 21 63 71 213 497 639 1491 3923 4473 11769 13109 27461 35307 39327 82383 91763 117981 247149 275289 278533 825867 835599 930739 1949731 2506797 2792217 5849193 6515173 8376651 17547579 19545519 51426607 58636557 154279821 359986249 462839463 1079958747 3239876241 3651289097 10953867291 25559023679 32861601873 76677071037 230031213111