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3131114213 = 17184183189
BaseRepresentation
bin1011101010100001…
…0000001011100101
322002012202002020002
42322220100023211
522403031123323
61234410351045
7140410013603
oct27250201345
98065662202
103131114213
1113674834a7
1273472b485
133ab900206
14219bb6873
15134d42828
hexbaa102e5

3131114213 has 4 divisors (see below), whose sum is σ = 3315297420. Its totient is φ = 2946931008.

The previous prime is 3131114191. The next prime is 3131114219. The reversal of 3131114213 is 3124111313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3124111313 = 19997156229.

It can be written as a sum of positive squares in 2 ways, for example, as 1845389764 + 1285724449 = 42958^2 + 35857^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131114213 - 214 = 3131097829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131114219) 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, 92091578 + ... + 92091611.

It is an arithmetic number, because the mean of its divisors is an integer number (828824355).

Almost surely, 23131114213 is an apocalyptic number.

It is an amenable number.

3131114213 is a deficient number, since it is larger than the sum of its proper divisors (184183207).

3131114213 is a wasteful number, since it uses less digits than its factorization.

3131114213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184183206.

The product of its digits is 216, while the sum is 20.

The square root of 3131114213 is about 55956.3598976917. The cubic root of 3131114213 is about 1462.9617448482.

Adding to 3131114213 its reverse (3124111313), we get a palindrome (6255225526).

The spelling of 3131114213 in words is "three billion, one hundred thirty-one million, one hundred fourteen thousand, two hundred thirteen".

Divisors: 1 17 184183189 3131114213