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13131122305 = 57596358897
BaseRepresentation
bin11000011101010110…
…10000011010000001
31020220010112010110011
430032223100122001
5203343031403210
610010553304521
7643254461260
oct141653203201
936803463404
1013131122305
1156291a35a4
122665705141
1313135c1272
148c7d3c5d7
1551cc02d8a
hex30ead0681

13131122305 has 16 divisors (see below), whose sum is σ = 18313626240. Its totient is φ = 8851583232.

The previous prime is 13131122287. The next prime is 13131122317. The reversal of 13131122305 is 50322113131.

It is a cyclic number.

It is not a de Polignac number, because 13131122305 - 27 = 13131122177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3177384 + ... + 3181513.

It is an arithmetic number, because the mean of its divisors is an integer number (1144601640).

Almost surely, 213131122305 is an apocalyptic number.

It is an amenable number.

13131122305 is a deficient number, since it is larger than the sum of its proper divisors (5182503935).

13131122305 is an equidigital number, since it uses as much as digits as its factorization.

13131122305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358968.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 13131122305 its reverse (50322113131), we get a palindrome (63453235436).

The spelling of 13131122305 in words is "thirteen billion, one hundred thirty-one million, one hundred twenty-two thousand, three hundred five".

Divisors: 1 5 7 35 59 295 413 2065 6358897 31794485 44512279 222561395 375174923 1875874615 2626224461 13131122305