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12103110231 = 35051798727
BaseRepresentation
bin10110100010110011…
…01100111001010111
31011020111010200222220
423101121230321113
5144241344011411
65320551353423
7605632511442
oct132131547127
934214120886
1012103110231
115150987943
122419382873
1311ab626bb4
1482b5bc659
154ac83bb06
hex2d166ce57

12103110231 has 8 divisors (see below), whose sum is σ = 16140695424. Its totient is φ = 8067132600.

The previous prime is 12103110191. The next prime is 12103110247. The reversal of 12103110231 is 13201130121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12103110231 - 229 = 11566239319 is a prime.

It is a super-2 number, since 2×121031102312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12103110231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103110631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384211 + ... + 414516.

It is an arithmetic number, because the mean of its divisors is an integer number (2017586928).

Almost surely, 212103110231 is an apocalyptic number.

12103110231 is a deficient number, since it is larger than the sum of its proper divisors (4037585193).

12103110231 is an equidigital number, since it uses as much as digits as its factorization.

12103110231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803781.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12103110231 its reverse (13201130121), we get a palindrome (25304240352).

The spelling of 12103110231 in words is "twelve billion, one hundred three million, one hundred ten thousand, two hundred thirty-one".

Divisors: 1 3 5051 15153 798727 2396181 4034370077 12103110231