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30215000121300 = 223252373581253381
BaseRepresentation
bin1101101111010111110100…
…10110010101111111010100
310221222112012022100120001200
412313223322112111333110
512430020310012340200
6144132325053552500
76235650604306251
oct667537226257724
9127875168316050
1030215000121300
11969a122957415
12347ba524a5730
1313b235431a737
147665b16c4428
15375e65088800
hex1b7afa595fd4

30215000121300 has 216 divisors, whose sum is σ = 97294440304152. Its totient is φ = 7837347456000.

The previous prime is 30215000121259. The next prime is 30215000121307. The reversal of 30215000121300 is 312100051203.

30215000121300 is a `hidden beast` number, since 3 + 0 + 21 + 500 + 0 + 12 + 130 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 1448811839556 + 28766188281744 = 1203666^2 + 5363412^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30215000121307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 119120610 + ... + 119373990.

Almost surely, 230215000121300 is an apocalyptic number.

30215000121300 is a gapful number since it is divisible by the number (30) 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 30215000121300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48647220152076).

30215000121300 is an abundant number, since it is smaller than the sum of its proper divisors (67079440182852).

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

30215000121300 is a wasteful number, since it uses less digits than its factorization.

30215000121300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257019 (or 257009 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 30215000121300 its reverse (312100051203), we get a palindrome (30527100172503).

The spelling of 30215000121300 in words is "thirty trillion, two hundred fifteen billion, one hundred twenty-one thousand, three hundred".