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2131200001 = 71133797109
BaseRepresentation
bin111111100000111…
…1000100000000001
312111112020011210101
41333001320200001
513331041400001
6551251002401
7103545621040
oct17701704001
95445204711
102131200001
119a4009117
124b5899401
1327c6c30b8
1416308c557
15c717ba01
hex7f078801

2131200001 has 16 divisors (see below), whose sum is σ = 2464041600. Its totient is φ = 1805545728.

The previous prime is 2131199989. The next prime is 2131200011. The reversal of 2131200001 is 1000021312.

It is not a de Polignac number, because 2131200001 - 25 = 2131199969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131200011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296235 + ... + 303343.

It is an arithmetic number, because the mean of its divisors is an integer number (154002600).

Almost surely, 22131200001 is an apocalyptic number.

It is an amenable number.

2131200001 is a deficient number, since it is larger than the sum of its proper divisors (332841599).

2131200001 is a wasteful number, since it uses less digits than its factorization.

2131200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7608.

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

The square root of 2131200001 is about 46164.9217588420. The cubic root of 2131200001 is about 1286.8899301673.

Adding to 2131200001 its reverse (1000021312), we get a palindrome (3131221313).

Subtracting from 2131200001 its reverse (1000021312), we obtain a square (1131178689 = 336332).

The spelling of 2131200001 in words is "two billion, one hundred thirty-one million, two hundred thousand, one".

Divisors: 1 7 113 379 791 2653 7109 42827 49763 299789 803317 2694311 5623219 18860177 304457143 2131200001