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13011203124 = 22331091105267
BaseRepresentation
bin11000001111000011…
…10011010000110100
31020120202212121021000
430013201303100310
5203121331444444
65551031123300
7640300254543
oct140741632064
936522777230
1013011203124
115577537537
122631513530
1312c47c507a
148b604415a
15512416469
hex307873434

13011203124 has 48 divisors (see below), whose sum is σ = 34042254400. Its totient is φ = 4297274208.

The previous prime is 13011203119. The next prime is 13011203129. The reversal of 13011203124 is 42130211031.

It is an interprime number because it is at equal distance from previous prime (13011203119) and next prime (13011203129).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13011203097 and 13011203106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011203129) 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, 540862 + ... + 564405.

Almost surely, 213011203124 is an apocalyptic number.

It is an amenable number.

13011203124 is an abundant number, since it is smaller than the sum of its proper divisors (21031051276).

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

13011203124 is a wasteful number, since it uses less digits than its factorization.

13011203124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105389 (or 1105381 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13011203124 its reverse (42130211031), we get a palindrome (55141414155).

The spelling of 13011203124 in words is "thirteen billion, eleven million, two hundred three thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 109 218 327 436 654 981 1308 1962 2943 3924 5886 11772 1105267 2210534 3315801 4421068 6631602 9947403 13263204 19894806 29842209 39789612 59684418 119368836 120474103 240948206 361422309 481896412 722844618 1084266927 1445689236 2168533854 3252800781 4337067708 6505601562 13011203124