Base | Representation |
---|---|
bin | 1001100011110001011000… |
… | …10011010010100110000110 |
3 | 2202102112002202202110102200 |
4 | 10301320230103102212012 |
5 | 10223344100134413110 |
6 | 112412333143015330 |
7 | 4266444646105233 |
oct | 461705423224606 |
9 | 82375082673380 |
10 | 21020313201030 |
11 | 6774734892580 |
12 | 2435a6443a546 |
13 | b9628cac7850 |
14 | 5295623d878a |
15 | 266bbead36c0 |
hex | 131e2c4d2986 |
21020313201030 has 192 divisors, whose sum is σ = 64214922320640. Its totient is φ = 4703302713600.
The previous prime is 21020313201029. The next prime is 21020313201049. The reversal of 21020313201030 is 3010231302012.
21020313201030 is a `hidden beast` number, since 210 + 2 + 0 + 31 + 320 + 103 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 21020313200994 and 21020313201012.
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, 116911341 + ... + 117090999.
It is an arithmetic number, because the mean of its divisors is an integer number (334452720420).
Almost surely, 221020313201030 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21020313201030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32107461160320).
21020313201030 is an abundant number, since it is smaller than the sum of its proper divisors (43194609119610).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21020313201030 is a wasteful number, since it uses less digits than its factorization.
21020313201030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 188787 (or 188784 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
Adding to 21020313201030 its reverse (3010231302012), we get a palindrome (24030544503042).
The spelling of 21020313201030 in words is "twenty-one trillion, twenty billion, three hundred thirteen million, two hundred one thousand, thirty".
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