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12103100140 = 2255314976631
BaseRepresentation
bin10110100010110011…
…01010011011101100
31011020111010012011011
423101121222123230
5144241343201030
65320551235004
7605632440145
oct132131523354
934214105134
1012103100140
1151509802aa
122419378a64
1311ab622421
1482b5b8acc
154ac838b2a
hex2d166a6ec

12103100140 has 48 divisors (see below), whose sum is σ = 26070206400. Its totient is φ = 4717955840.

The previous prime is 12103100123. The next prime is 12103100159. The reversal of 12103100140 is 4100130121.

It is a self number, because there is not a number n which added to its sum of digits gives 12103100140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119625 + ... + 196255.

It is an arithmetic number, because the mean of its divisors is an integer number (543129300).

Almost surely, 212103100140 is an apocalyptic number.

12103100140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103100140 is an abundant number, since it is smaller than the sum of its proper divisors (13967106260).

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

12103100140 is a wasteful number, since it uses less digits than its factorization.

12103100140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76842 (or 76840 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12103100140 its reverse (4100130121), we get a palindrome (16203230261).

The spelling of 12103100140 in words is "twelve billion, one hundred three million, one hundred thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 53 106 149 212 265 298 530 596 745 1060 1490 2980 7897 15794 31588 39485 76631 78970 153262 157940 306524 383155 766310 1532620 4061443 8122886 11418019 16245772 20307215 22836038 40614430 45672076 57090095 81228860 114180190 228360380 605155007 1210310014 2420620028 3025775035 6051550070 12103100140