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23013031230 = 2335719640853
BaseRepresentation
bin10101011011101011…
…101111110100111110
32012101211002010002000
4111123223233310332
5334112313444410
614323321043130
71443166352340
oct253353576476
965354063060
1023013031230
11983a28aa82
1245630264a6
1322299a2657
141184521290
158ea535dc0
hex55baefd3e

23013031230 has 128 divisors (see below), whose sum is σ = 73826380800. Its totient is φ = 4983265152.

The previous prime is 23013031213. The next prime is 23013031231. The reversal of 23013031230 is 3213031032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013031231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 284517 + ... + 356336.

It is an arithmetic number, because the mean of its divisors is an integer number (576768600).

Almost surely, 223013031230 is an apocalyptic number.

23013031230 is an abundant number, since it is smaller than the sum of its proper divisors (50813349570).

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

23013031230 is a wasteful number, since it uses less digits than its factorization.

23013031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640895 (or 640889 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 23013031230 its reverse (3213031032), we get a palindrome (26226062262).

The spelling of 23013031230 in words is "twenty-three billion, thirteen million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 19 21 27 30 35 38 42 45 54 57 63 70 90 95 105 114 126 133 135 171 189 190 210 266 270 285 315 342 378 399 513 570 630 665 798 855 945 1026 1197 1330 1710 1890 1995 2394 2565 3591 3990 5130 5985 7182 11970 17955 35910 640853 1281706 1922559 3204265 3845118 4485971 5767677 6408530 8971942 9612795 11535354 12176207 13457913 17303031 19225590 22429855 24352414 26915826 28838385 34606062 36528621 40373739 44859710 57676770 60881035 67289565 73057242 80747478 85233449 86515155 109585863 121121217 121762070 134579130 170466898 173030310 182643105 201868695 219171726 242242434 255700347 328757589 365286210 403737390 426167245 511400694 547929315 605606085 657515178 767101041 852334490 1095858630 1211212170 1278501735 1534202082 1643787945 2301303123 2557003470 3287575890 3835505205 4602606246 7671010410 11506515615 23013031230