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20312641213050 = 23521005171347211
BaseRepresentation
bin1001001111001011001111…
…10000111001001001111010
32122220212110220001200200210
410213211213300321021322
510130300242122304200
6111111255404211550
74164353120336634
oct447454760711172
978825426050623
1020312641213050
1165215a746284a
122340886539bb6
13b44621072764
145031cc211a54
152535a2224650
hex127967c3927a

20312641213050 has 48 divisors (see below), whose sum is σ = 50375888763552. Its totient is φ = 5416646414400.

The previous prime is 20312641213037. The next prime is 20312641213069. The reversal of 20312641213050 is 5031214621302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20312641212999 and 20312641213017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14403945 + ... + 15751155.

It is an arithmetic number, because the mean of its divisors is an integer number (1049497682574).

Almost surely, 220312641213050 is an apocalyptic number.

20312641213050 is an abundant number, since it is smaller than the sum of its proper divisors (30063247550502).

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

20312641213050 is a wasteful number, since it uses less digits than its factorization.

20312641213050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447743 (or 1447738 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 20312641213050 its reverse (5031214621302), we get a palindrome (25343855834352).

The spelling of 20312641213050 in words is "twenty trillion, three hundred twelve billion, six hundred forty-one million, two hundred thirteen thousand, fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 100517 201034 301551 502585 603102 1005170 1347211 1507755 2512925 2694422 3015510 4041633 5025850 6736055 7538775 8083266 13472110 15077550 20208165 33680275 40416330 67360550 101040825 202081650 135417608087 270835216174 406252824261 677088040435 812505648522 1354176080870 2031264121305 3385440202175 4062528242610 6770880404350 10156320606525 20312641213050