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100943231 = 4312311907
BaseRepresentation
bin1100000010001…
…00010101111111
321000221110002012
412001010111333
5201320140411
614003321435
72334001064
oct601042577
9230843065
10100943231
1151a86164
122998027b
1317bb3c2c
14d598c6b
158cde18b
hex604457f

100943231 has 8 divisors (see below), whose sum is σ = 103428864. Its totient is φ = 98463960.

The previous prime is 100943203. The next prime is 100943233. The reversal of 100943231 is 132349001.

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 100943231 - 210 = 100942207 is a prime.

It is a super-2 number, since 2×1009432312 = 20379071769438722, 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 = 100943197 and 100943206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100943233) 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, 51980 + ... + 53886.

It is an arithmetic number, because the mean of its divisors is an integer number (12928608).

Almost surely, 2100943231 is an apocalyptic number.

100943231 is a deficient number, since it is larger than the sum of its proper divisors (2485633).

100943231 is a wasteful number, since it uses less digits than its factorization.

100943231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 100943231 is about 10047.0508608248. The cubic root of 100943231 is about 465.6136823578.

The spelling of 100943231 in words is "one hundred million, nine hundred forty-three thousand, two hundred thirty-one".

Divisors: 1 43 1231 1907 52933 82001 2347517 100943231