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200131012001 = 1772391129159
BaseRepresentation
bin1011101001100010111…
…1001110010110100001
3201010120110210210011202
42322120233032112201
511234332014341001
6231534450050545
720313301351124
oct2723057162641
9633513723152
10200131012001
1177969814488
1232953579a55
1315b4550047b
1499876663bb
155314c0296b
hex2e98bce5a1

200131012001 has 4 divisors (see below), whose sum is σ = 200132318400. Its totient is φ = 200129705604.

The previous prime is 200131011859. The next prime is 200131012051. The reversal of 200131012001 is 100210131002.

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 200131012001 - 210 = 200131010977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200131012051) 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, 387341 + ... + 741818.

It is an arithmetic number, because the mean of its divisors is an integer number (50033079600).

Almost surely, 2200131012001 is an apocalyptic number.

It is an amenable number.

200131012001 is a deficient number, since it is larger than the sum of its proper divisors (1306399).

200131012001 is a wasteful number, since it uses less digits than its factorization.

200131012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306398.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 200131012001 its reverse (100210131002), we get a palindrome (300341143003).

The spelling of 200131012001 in words is "two hundred billion, one hundred thirty-one million, twelve thousand, one".

Divisors: 1 177239 1129159 200131012001