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201031200001 = 1907631053827
BaseRepresentation
bin1011101100111001100…
…1001010110100000001
3201012220012200001222001
42323032121022310001
511243202441400001
6232204044144001
720344512002002
oct2731631126401
9635805601861
10201031200001
1178290965005
1232b64b38001
1315c59b615a8
149a310311a9
155368c6a001
hex2ece64ad01

201031200001 has 4 divisors (see below), whose sum is σ = 201032444592. Its totient is φ = 201029955412.

The previous prime is 201031199983. The next prime is 201031200031. The reversal of 201031200001 is 100002130102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201031200001 - 217 = 201031068929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201031200031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336151 + ... + 717676.

It is an arithmetic number, because the mean of its divisors is an integer number (50258111148).

Almost surely, 2201031200001 is an apocalyptic number.

It is an amenable number.

201031200001 is a deficient number, since it is larger than the sum of its proper divisors (1244591).

201031200001 is a wasteful number, since it uses less digits than its factorization.

201031200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244590.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 201031200001 its reverse (100002130102), we get a palindrome (301033330103).

The spelling of 201031200001 in words is "two hundred one billion, thirty-one million, two hundred thousand, one".

Divisors: 1 190763 1053827 201031200001