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20040320301 = 361547200201
BaseRepresentation
bin10010101010011111…
…110000010100101101
31220201122101202022020
4102222133300110231
5312020310222201
613112325340353
71306421624541
oct225237602455
956648352266
1020040320301
118554269291
123a735676b9
131b74b541c1
14d817bda21
157c4582a36
hex4aa7f052d

20040320301 has 16 divisors (see below), whose sum is σ = 27208252608. Its totient is φ = 13117104000.

The previous prime is 20040320299. The next prime is 20040320309. The reversal of 20040320301 is 10302304002.

20040320301 is a nontrivial binomial coefficient, being equal to C(200202, 2).

It is not a de Polignac number, because 20040320301 - 21 = 20040320299 is a prime.

It is a super-2 number, since 2×200403203012 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040320309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 200201.

It is an arithmetic number, because the mean of its divisors is an integer number (1700515788).

Almost surely, 220040320301 is an apocalyptic number.

20040320301 is the 200201-st triangular number and also the 100101-st hexagonal number.

It is an amenable number.

20040320301 is a deficient number, since it is larger than the sum of its proper divisors (7167932307).

20040320301 is a wasteful number, since it uses less digits than its factorization.

20040320301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200812.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20040320301 its reverse (10302304002), we get a palindrome (30342624303).

The spelling of 20040320301 in words is "twenty billion, forty million, three hundred twenty thousand, three hundred one".

Divisors: 1 3 61 183 547 1641 33367 100101 200201 600603 12212261 36636783 109509947 328529841 6680106767 20040320301