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20313130200 = 233521141271277
BaseRepresentation
bin10010111010110000…
…011100010011011000
31221102122201221010120
4102322300130103120
5313100130131300
613155352513240
71316243520636
oct227260342330
957378657116
1020313130200
118684261410
123b2a9ab820
131bb9521c8c
14da9b16356
157dd4c03a0
hex4bac1c4d8

20313130200 has 384 divisors, whose sum is σ = 70885463040. Its totient is φ = 4769280000.

The previous prime is 20313130183. The next prime is 20313130213. The reversal of 20313130200 is 203131302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20313130200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73332462 + ... + 73332738.

It is an arithmetic number, because the mean of its divisors is an integer number (184597560).

Almost surely, 220313130200 is an apocalyptic number.

20313130200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313130200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35442731520).

20313130200 is an abundant number, since it is smaller than the sum of its proper divisors (50572332840).

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

20313130200 is a wasteful number, since it uses less digits than its factorization.

20313130200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20313130200 its reverse (203131302), we get a palindrome (20516261502).

20313130200 divided by its reverse (203131302) gives a square (100 = 102).

The spelling of 20313130200 in words is "twenty billion, three hundred thirteen million, one hundred thirty thousand, two hundred".