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13000203100 = 2252130002031
BaseRepresentation
bin11000001101101111…
…10101101101011100
31020120000011202001201
430012313311231130
5203111022444400
65545555245244
7640104621523
oct140667655534
936500152051
1013000203100
115571304005
1226298a9824
1312c2443291
148b47bd4ba
1551149206a
hex306df5b5c

13000203100 has 18 divisors (see below), whose sum is σ = 28210440944. Its totient is φ = 5200081200.

The previous prime is 13000202987. The next prime is 13000203109. The reversal of 13000203100 is 130200031.

It is a super-2 number, since 2×130002031002 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000203109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65000916 + ... + 65001115.

Almost surely, 213000203100 is an apocalyptic number.

13000203100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13000203100 is an abundant number, since it is smaller than the sum of its proper divisors (15210237844).

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

13000203100 is a wasteful number, since it uses less digits than its factorization.

13000203100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130002045 (or 130002038 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 13000203100 its reverse (130200031), we get a palindrome (13130403131).

The spelling of 13000203100 in words is "thirteen billion, two hundred three thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 130002031 260004062 520008124 650010155 1300020310 2600040620 3250050775 6500101550 13000203100