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3000331021 = 19157912159
BaseRepresentation
bin1011001011010101…
…0110101100001101
321202002122121102011
42302311112230031
522121041043041
61213415301221
7134231251522
oct26265265415
97662577364
103000331021
1112aa677116
126b897a811
1338a79c0cc
14206691149
1512860be81
hexb2d56b0d

3000331021 has 4 divisors (see below), whose sum is σ = 3158243200. Its totient is φ = 2842418844.

The previous prime is 3000330973. The next prime is 3000331027. The reversal of 3000331021 is 1201330003.

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 3000331021 - 211 = 3000328973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3000330992 and 3000331010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3000331027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78956061 + ... + 78956098.

It is an arithmetic number, because the mean of its divisors is an integer number (789560800).

Almost surely, 23000331021 is an apocalyptic number.

It is an amenable number.

3000331021 is a deficient number, since it is larger than the sum of its proper divisors (157912179).

3000331021 is a wasteful number, since it uses less digits than its factorization.

3000331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157912178.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 3000331021 is about 54775.2774616432. The cubic root of 3000331021 is about 1442.3026144559.

Adding to 3000331021 its reverse (1201330003), we get a palindrome (4201661024).

The spelling of 3000331021 in words is "three billion, three hundred thirty-one thousand, twenty-one".

Divisors: 1 19 157912159 3000331021