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20300320312131 = 346631451163079
BaseRepresentation
bin1001001110110100010010…
…11000011000101101000011
32122212200200020010002001010
410213122021120120231003
510130100023444442011
6111101501032412003
74163435601402666
oct447321130305503
978780606102033
1020300320312131
116517354651602
12233a408247003
13b434095a2942
1450277db3d6dd
152530d07171a6
hex127689618b43

20300320312131 has 8 divisors (see below), whose sum is σ = 27072898420480. Its totient is φ = 13530644539272.

The previous prime is 20300320312123. The next prime is 20300320312183. The reversal of 20300320312131 is 13121302300302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20300320312131 - 23 = 20300320312123 is a prime.

It is a super-2 number, since 2×203003203121312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20300320312098 and 20300320312107.

It is not an unprimeable number, because it can be changed into a prime (20300320362131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725567551 + ... + 725595528.

It is an arithmetic number, because the mean of its divisors is an integer number (3384112302560).

Almost surely, 220300320312131 is an apocalyptic number.

20300320312131 is a deficient number, since it is larger than the sum of its proper divisors (6772578108349).

20300320312131 is a wasteful number, since it uses less digits than its factorization.

20300320312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451167745.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20300320312131 its reverse (13121302300302), we get a palindrome (33421622612433).

The spelling of 20300320312131 in words is "twenty trillion, three hundred billion, three hundred twenty million, three hundred twelve thousand, one hundred thirty-one".

Divisors: 1 3 4663 13989 1451163079 4353489237 6766773437377 20300320312131