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12103023401 = 717142371473
BaseRepresentation
bin10110100010110010…
…10111101100101001
31011020110222021212222
423101121113230221
5144241333222101
65320545443425
7605632000340
oct132131275451
934213867788
1012103023401
115150928687
122419340575
1311ab5c6511
1482b598b57
154ac82101b
hex2d1657b29

12103023401 has 16 divisors (see below), whose sum is σ = 14656172544. Its totient is φ = 9756785664.

The previous prime is 12103023391. The next prime is 12103023409. The reversal of 12103023401 is 10432030121.

It is a cyclic number.

It is not a de Polignac number, because 12103023401 - 210 = 12103022377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12103023401.

It is not an unprimeable number, because it can be changed into a prime (12103023409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133601 + ... + 205073.

It is an arithmetic number, because the mean of its divisors is an integer number (916010784).

Almost surely, 212103023401 is an apocalyptic number.

It is an amenable number.

12103023401 is a deficient number, since it is larger than the sum of its proper divisors (2553149143).

12103023401 is a wasteful number, since it uses less digits than its factorization.

12103023401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72920.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12103023401 its reverse (10432030121), we get a palindrome (22535053522).

The spelling of 12103023401 in words is "twelve billion, one hundred three million, twenty-three thousand, four hundred one".

Divisors: 1 7 17 119 1423 9961 24191 71473 169337 500311 1215041 8505287 101706079 711942553 1729003343 12103023401