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122103231 = 3177332797
BaseRepresentation
bin1110100011100…
…10010110111111
322111202111010220
413101302112333
5222224300411
620041032423
73011601045
oct721622677
9274674126
10122103231
1162a18a68
1234a85713
131c3b2343
1412306395
15aabdb06
hex74725bf

122103231 has 16 divisors (see below), whose sum is σ = 174747744. Its totient is φ = 75561984.

The previous prime is 122103199. The next prime is 122103257. The reversal of 122103231 is 132301221.

It is not a de Polignac number, because 122103231 - 25 = 122103199 is a prime.

It is a super-2 number, since 2×1221032312 = 29818398041278722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122103231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122103431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12676 + ... + 20121.

It is an arithmetic number, because the mean of its divisors is an integer number (10921734).

Almost surely, 2122103231 is an apocalyptic number.

122103231 is a deficient number, since it is larger than the sum of its proper divisors (52644513).

122103231 is a wasteful number, since it uses less digits than its factorization.

122103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32890.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 122103231 is about 11050.0330768736. The cubic root of 122103231 is about 496.1074155476.

Adding to 122103231 its reverse (132301221), we get a palindrome (254404452).

The spelling of 122103231 in words is "one hundred twenty-two million, one hundred three thousand, two hundred thirty-one".

Divisors: 1 3 17 51 73 219 1241 3723 32797 98391 557549 1672647 2394181 7182543 40701077 122103231