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123223113320 = 23523912889447
BaseRepresentation
bin111001011000010101…
…0110111111001101000
3102210001122000201202212
41302300222313321220
54004330104111240
6132335150544252
711621404116146
oct1626052677150
9383048021685
10123223113320
114829326493a
121ba6b208088
13b809b89408
145d6d42a596
153312e1c165
hex1cb0ab7e68

123223113320 has 32 divisors (see below), whose sum is σ = 278412076800. Its totient is φ = 49083010368.

The previous prime is 123223113313. The next prime is 123223113347. The reversal of 123223113320 is 23311322321.

It is a super-2 number, since 2×1232231133202 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6435164 + ... + 6454283.

It is an arithmetic number, because the mean of its divisors is an integer number (8700377400).

Almost surely, 2123223113320 is an apocalyptic number.

123223113320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123223113320 is an abundant number, since it is smaller than the sum of its proper divisors (155188963480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123223113320 is a wasteful number, since it uses less digits than its factorization.

123223113320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12889697 (or 12889693 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123223113320 its reverse (23311322321), we get a palindrome (146534435641).

The spelling of 123223113320 in words is "one hundred twenty-three billion, two hundred twenty-three million, one hundred thirteen thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 239 478 956 1195 1912 2390 4780 9560 12889447 25778894 51557788 64447235 103115576 128894470 257788940 515577880 3080577833 6161155666 12322311332 15402889165 24644622664 30805778330 61611556660 123223113320