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231033103 = 71916310657
BaseRepresentation
bin11011100010101…
…00100100001111
3121002201200211121
431301110210033
5433121024403
634531501411
75503514620
oct1561244417
9532650747
10231033103
11109459654
1265457867
1338b315a2
142297da47
15154393bd
hexdc5490f

231033103 has 16 divisors (see below), whose sum is σ = 279665920. Its totient is φ = 186437376.

The previous prime is 231033097. The next prime is 231033107. The reversal of 231033103 is 301330132.

231033103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-231033103 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 (231033107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16351 + ... + 27007.

It is an arithmetic number, because the mean of its divisors is an integer number (17479120).

Almost surely, 2231033103 is an apocalyptic number.

231033103 is a deficient number, since it is larger than the sum of its proper divisors (48632817).

231033103 is a wasteful number, since it uses less digits than its factorization.

231033103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10846.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 231033103 is about 15199.7731233068. The cubic root of 231033103 is about 613.6085518213.

Adding to 231033103 its reverse (301330132), we get a palindrome (532363235).

The spelling of 231033103 in words is "two hundred thirty-one million, thirty-three thousand, one hundred three".

Divisors: 1 7 19 133 163 1141 3097 10657 21679 74599 202483 1417381 1737091 12159637 33004729 231033103