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3031131313 = 71959386279
BaseRepresentation
bin1011010010101011…
…0110010010110001
321211020121102110201
42310222312102301
522201432200223
61220435355201
7135054122350
oct26452662261
97736542421
103031131313
111315aa3901
12707152b01
13393c94432
1420a7cb997
1512b192ead
hexb4ab64b1

3031131313 has 16 divisors (see below), whose sum is σ = 3708288000. Its totient is φ = 2419645392.

The previous prime is 3031131307. The next prime is 3031131347. The reversal of 3031131313 is 3131311303.

It is a happy number.

3031131313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3031131313 - 25 = 3031131281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3031131373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185293 + ... + 200986.

It is an arithmetic number, because the mean of its divisors is an integer number (231768000).

Almost surely, 23031131313 is an apocalyptic number.

It is an amenable number.

3031131313 is a deficient number, since it is larger than the sum of its proper divisors (677156687).

3031131313 is a wasteful number, since it uses less digits than its factorization.

3031131313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386364.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 3031131313 is about 55055.7109935018. The cubic root of 3031131313 is about 1447.2212041274.

Adding to 3031131313 its reverse (3131311303), we get a palindrome (6162442616).

The spelling of 3031131313 in words is "three billion, thirty-one million, one hundred thirty-one thousand, three hundred thirteen".

Divisors: 1 7 19 59 133 413 1121 7847 386279 2703953 7339301 22790461 51375107 159533227 433018759 3031131313