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3031011213 = 31010337071
BaseRepresentation
bin1011010010101001…
…1000111110001101
321211020101022201120
42310222120332031
522201414324323
61220433031153
7135053112246
oct26452307615
97736338646
103031011213
111315a2164a
127070b54b9
13393c51879
1420a799ccd
1512b16c5e3
hexb4a98f8d

3031011213 has 4 divisors (see below), whose sum is σ = 4041348288. Its totient is φ = 2020674140.

The previous prime is 3031011199. The next prime is 3031011293. The reversal of 3031011213 is 3121101303.

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 3031011213 - 24 = 3031011197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3031011192 and 3031011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031011293) 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, 505168533 + ... + 505168538.

It is an arithmetic number, because the mean of its divisors is an integer number (1010337072).

Almost surely, 23031011213 is an apocalyptic number.

It is an amenable number.

3031011213 is a deficient number, since it is larger than the sum of its proper divisors (1010337075).

3031011213 is a wasteful number, since it uses less digits than its factorization.

3031011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010337074.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 3031011213 is about 55054.6202693289. The cubic root of 3031011213 is about 1447.2020898601.

Adding to 3031011213 its reverse (3121101303), we get a palindrome (6152112516).

The spelling of 3031011213 in words is "three billion, thirty-one million, eleven thousand, two hundred thirteen".

Divisors: 1 3 1010337071 3031011213