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103000312020 = 22357124178477
BaseRepresentation
bin101111111101101001…
…1000000100011010100
3100211212021020222121010
41133323103000203110
53141421034441040
6115152342052220
710304305130604
oct1377323004324
9324767228533
10103000312020
113a755a99a11
1217b6671a070
1399362a2cb8
144db1708c04
152a2c840e80
hex17fb4c08d4

103000312020 has 48 divisors (see below), whose sum is σ = 292462869888. Its totient is φ = 27079893120.

The previous prime is 103000311901. The next prime is 103000312031. The reversal of 103000312020 is 20213000301.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 103000311987 and 103000312005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12084979 + ... + 12093498.

It is an arithmetic number, because the mean of its divisors is an integer number (6092976456).

Almost surely, 2103000312020 is an apocalyptic number.

103000312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103000312020 is an abundant number, since it is smaller than the sum of its proper divisors (189462557868).

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

103000312020 is a wasteful number, since it uses less digits than its factorization.

103000312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24178560 (or 24178558 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 103000312020 its reverse (20213000301), we get a palindrome (123213312321).

The spelling of 103000312020 in words is "one hundred three billion, three hundred twelve thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 71 142 213 284 355 426 710 852 1065 1420 2130 4260 24178477 48356954 72535431 96713908 120892385 145070862 241784770 290141724 362677155 483569540 725354310 1450708620 1716671867 3433343734 5150015601 6866687468 8583359335 10300031202 17166718670 20600062404 25750078005 34333437340 51500156010 103000312020