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2231683845 = 354718117489
BaseRepresentation
bin1000010100000100…
…1100101100000101
312202112022021201020
42011001030230011
514032302340340
61005240421353
7106205666616
oct20501145405
95675267636
102231683845
11a45800116
12523477859
13297475bb1
14172567c0d
15d0dc99d0
hex8504cb05

2231683845 has 32 divisors (see below), whose sum is σ = 3667023360. Its totient is φ = 1158405120.

The previous prime is 2231683843. The next prime is 2231683889. The reversal of 2231683845 is 5483861322.

It is not a de Polignac number, because 2231683845 - 21 = 2231683843 is a prime.

It is a super-3 number, since 3×22316838453 (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231683797 and 2231683806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231683843) 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 31 ways as a sum of consecutive naturals, for example, 118861 + ... + 136349.

It is an arithmetic number, because the mean of its divisors is an integer number (114594480).

Almost surely, 22231683845 is an apocalyptic number.

It is an amenable number.

2231683845 is a deficient number, since it is larger than the sum of its proper divisors (1435339515).

2231683845 is a wasteful number, since it uses less digits than its factorization.

2231683845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17725.

The product of its digits is 276480, while the sum is 42.

The square root of 2231683845 is about 47240.7011484800. The cubic root of 2231683845 is about 1306.8053081220.

The spelling of 2231683845 in words is "two billion, two hundred thirty-one million, six hundred eighty-three thousand, eight hundred forty-five".

Divisors: 1 3 5 15 47 141 181 235 543 705 905 2715 8507 17489 25521 42535 52467 87445 127605 262335 821983 2465949 3165509 4109915 9496527 12329745 15827545 47482635 148778923 446336769 743894615 2231683845