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2231983 = 13247281
BaseRepresentation
bin1000100000111010101111
311012101201001
420200322233
51032410413
6115501131
724654145
oct10407257
94171631
102231983
111294a16
128b77a7
13601c00
14421595
152e14dd
hex220eaf

2231983 has 12 divisors (see below), whose sum is σ = 2477088. Its totient is φ = 2009280.

The previous prime is 2231941. The next prime is 2232017. The reversal of 2231983 is 3891322.

2231983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-2231983 is a prime.

It is a super-3 number, since 3×22319833 = 33357531290733417261, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2234983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7803 + ... + 8083.

It is an arithmetic number, because the mean of its divisors is an integer number (206424).

22231983 is an apocalyptic number.

2231983 is a deficient number, since it is larger than the sum of its proper divisors (245105).

2231983 is a wasteful number, since it uses less digits than its factorization.

2231983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 341 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 2231983 is about 1493.9822622776. The cubic root of 2231983 is about 130.6863697497.

The spelling of 2231983 in words is "two million, two hundred thirty-one thousand, nine hundred eighty-three".

Divisors: 1 13 47 169 281 611 3653 7943 13207 47489 171691 2231983