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13012531353 = 321445836817
BaseRepresentation
bin11000001111001101…
…10111100010011001
31020120212101002020200
430013212313202121
5203122202000403
65551115412413
7640314456123
oct140746674231
936525332220
1013012531353
115578264448
122631a54109
1312c4b6b7c3
148b62ac213
155125c9ca3
hex3079b7899

13012531353 has 6 divisors (see below), whose sum is σ = 18795878634. Its totient is φ = 8675020896.

The previous prime is 13012531321. The next prime is 13012531417. The reversal of 13012531353 is 35313521031.

13012531353 is a `hidden beast` number, since 1 + 301 + 2 + 5 + 3 + 1 + 353 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8670775689 + 4341755664 = 93117^2 + 65892^2 .

It is not a de Polignac number, because 13012531353 - 25 = 13012531321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13012531303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 722918400 + ... + 722918417.

It is an arithmetic number, because the mean of its divisors is an integer number (3132646439).

Almost surely, 213012531353 is an apocalyptic number.

It is an amenable number.

13012531353 is a deficient number, since it is larger than the sum of its proper divisors (5783347281).

13012531353 is a wasteful number, since it uses less digits than its factorization.

13012531353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445836823 (or 1445836820 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The spelling of 13012531353 in words is "thirteen billion, twelve million, five hundred thirty-one thousand, three hundred fifty-three".

Divisors: 1 3 9 1445836817 4337510451 13012531353