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20123203312301 = 401449111765149
BaseRepresentation
bin1001001001101010011000…
…11000101001101010101101
32122020202111122020020112112
410210311030120221222231
510114144310021443201
6110444245540413405
74144565510631125
oct444651430515255
978222448206475
1020123203312301
1164592257280a1
1223100180a7265
13b2c7c102946b
144d7d7abb1c85
1524d6b61910bb
hex124d4c629aad

20123203312301 has 8 divisors (see below), whose sum is σ = 20218315635000. Its totient is φ = 20028314521600.

The previous prime is 20123203312217. The next prime is 20123203312313. The reversal of 20123203312301 is 10321330232102.

It can be written as a sum of positive squares in 4 ways, for example, as 16735667355625 + 3387535956676 = 4090925^2 + 1840526^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20123203312301 - 218 = 20123203050157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123203332301) 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, 55702526 + ... + 56062623.

It is an arithmetic number, because the mean of its divisors is an integer number (2527289454375).

Almost surely, 220123203312301 is an apocalyptic number.

It is an amenable number.

20123203312301 is a deficient number, since it is larger than the sum of its proper divisors (95112322699).

20123203312301 is a wasteful number, since it uses less digits than its factorization.

20123203312301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111765999.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20123203312301 its reverse (10321330232102), we get a palindrome (30444533544403).

The spelling of 20123203312301 in words is "twenty trillion, one hundred twenty-three billion, two hundred three million, three hundred twelve thousand, three hundred one".

Divisors: 1 401 449 180049 111765149 44817824749 50182551901 20123203312301