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13121032300 = 2252472791709
BaseRepresentation
bin11000011100001001…
…10001000001101100
31020212102112111120021
430032010301001230
5203332441013200
610005553131524
7643102635325
oct141604610154
936772474507
1013121032300
115623531852
122662259ba4
13131149a74c
148c687344c
1551bdad41a
hex30e13106c

13121032300 has 36 divisors (see below), whose sum is σ = 29078451360. Its totient is φ = 5136742720.

The previous prime is 13121032277. The next prime is 13121032319. The reversal of 13121032300 is 323012131.

It is a super-2 number, since 2×131210323002 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1391155 + ... + 1400554.

It is an arithmetic number, because the mean of its divisors is an integer number (807734760).

Almost surely, 213121032300 is an apocalyptic number.

13121032300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121032300 is an abundant number, since it is smaller than the sum of its proper divisors (15957419060).

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

13121032300 is a wasteful number, since it uses less digits than its factorization.

13121032300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791770 (or 2791763 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13121032300 its reverse (323012131), we get a palindrome (13444044431).

The spelling of 13121032300 in words is "thirteen billion, one hundred twenty-one million, thirty-two thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 47 50 94 100 188 235 470 940 1175 2350 4700 2791709 5583418 11166836 13958545 27917090 55834180 69792725 131210323 139585450 262420646 279170900 524841292 656051615 1312103230 2624206460 3280258075 6560516150 13121032300