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2000312031 = 3666770677
BaseRepresentation
bin111011100111010…
…0101011011011111
312011101221101020210
41313032211123133
513044034441111
6530253343503
7100366241334
oct16716453337
95141841223
102000312031
11937140043
12479a97b93
1325b5563b3
1414d93a98b
15ba9250a6
hex773a56df

2000312031 has 4 divisors (see below), whose sum is σ = 2667082712. Its totient is φ = 1333541352.

The previous prime is 2000312029. The next prime is 2000312051. The reversal of 2000312031 is 1302130002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2000312031 - 21 = 2000312029 is a prime.

It is a super-2 number, since 2×20003120312 = 8002496442726689922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000311998 and 2000312016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000312051) 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, 333385336 + ... + 333385341.

It is an arithmetic number, because the mean of its divisors is an integer number (666770678).

Almost surely, 22000312031 is an apocalyptic number.

2000312031 is a deficient number, since it is larger than the sum of its proper divisors (666770681).

2000312031 is an equidigital number, since it uses as much as digits as its factorization.

2000312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666770680.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2000312031 is about 44724.8480265724. The cubic root of 2000312031 is about 1259.9865688919.

Adding to 2000312031 its reverse (1302130002), we get a palindrome (3302442033).

The spelling of 2000312031 in words is "two billion, three hundred twelve thousand, thirty-one".

Divisors: 1 3 666770677 2000312031