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230123144 = 23831133067
BaseRepresentation
bin11011011011101…
…10011010001000
3121001000110121102
431231312122020
5432402420034
634500200532
75463004646
oct1555663210
9531013542
10230123144
11108997a19
1265099148
13388a3354
14227c4196
151530997e
hexdb76688

230123144 has 32 divisors (see below), whose sum is σ = 440687520. Its totient is φ = 112632576.

The previous prime is 230123099. The next prime is 230123167. The reversal of 230123144 is 441321032.

It is a super-2 number, since 2×2301231442 = 105913322808889472, which 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, 73499 + ... + 76565.

It is an arithmetic number, because the mean of its divisors is an integer number (13771485).

Almost surely, 2230123144 is an apocalyptic number.

It is an amenable number.

230123144 is a deficient number, since it is larger than the sum of its proper divisors (210564376).

230123144 is a wasteful number, since it uses less digits than its factorization.

230123144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269 (or 3265 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 230123144 is about 15169.8102822679. The cubic root of 230123144 is about 612.8018949897.

Adding to 230123144 its reverse (441321032), we get a palindrome (671444176).

The spelling of 230123144 in words is "two hundred thirty million, one hundred twenty-three thousand, one hundred forty-four".

Divisors: 1 2 4 8 83 113 166 226 332 452 664 904 3067 6134 9379 12268 18758 24536 37516 75032 254561 346571 509122 693142 1018244 1386284 2036488 2772568 28765393 57530786 115061572 230123144