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2000312321 = 7285758903
BaseRepresentation
bin111011100111010…
…0101100000000001
312011101221101122112
41313032211200001
513044034443241
6530253345105
7100366242230
oct16716454001
95141841575
102000312321
11937140287
12479a98195
1325b556577
1414d93ab17
15ba9251eb
hex773a5801

2000312321 has 4 divisors (see below), whose sum is σ = 2286071232. Its totient is φ = 1714553412.

The previous prime is 2000312297. The next prime is 2000312359. The reversal of 2000312321 is 1232130002.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1232130002 = 2616065001.

It is a cyclic number.

It is not a de Polignac number, because 2000312321 - 26 = 2000312257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2000312296 and 2000312305.

It is not an unprimeable number, because it can be changed into a prime (2000312521) 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, 142879445 + ... + 142879458.

It is an arithmetic number, because the mean of its divisors is an integer number (571517808).

Almost surely, 22000312321 is an apocalyptic number.

It is an amenable number.

2000312321 is a deficient number, since it is larger than the sum of its proper divisors (285758911).

2000312321 is an equidigital number, since it uses as much as digits as its factorization.

2000312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285758910.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2000312321 is about 44724.8512686180. The cubic root of 2000312321 is about 1259.9866297817.

Adding to 2000312321 its reverse (1232130002), we get a palindrome (3232442323).

The spelling of 2000312321 in words is "two billion, three hundred twelve thousand, three hundred twenty-one".

Divisors: 1 7 285758903 2000312321