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13031023302 = 23211255125799
BaseRepresentation
bin11000010001011010…
…11010001011000110
31020122011011120102200
430020231122023012
5203141420221202
65553020015330
7640630604403
oct141055321306
936564146380
1013031023302
115587744750
122638091546
1312c894469b
148b89232aa
1551402de1c
hex308b5a2c6

13031023302 has 48 divisors (see below), whose sum is σ = 30813868800. Its totient is φ = 3947094000.

The previous prime is 13031023301. The next prime is 13031023309. The reversal of 13031023302 is 20332013031.

13031023302 is a `hidden beast` number, since 1 + 30 + 310 + 23 + 302 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031023301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492199 + ... + 517997.

It is an arithmetic number, because the mean of its divisors is an integer number (641955600).

Almost surely, 213031023302 is an apocalyptic number.

13031023302 is an abundant number, since it is smaller than the sum of its proper divisors (17782845498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13031023302 is a wasteful number, since it uses less digits than its factorization.

13031023302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28369 (or 28366 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 13031023302 its reverse (20332013031), we get a palindrome (33363036333).

The spelling of 13031023302 in words is "thirteen billion, thirty-one million, twenty-three thousand, three hundred two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 2551 5102 7653 15306 22959 25799 28061 45918 51598 56122 77397 84183 154794 168366 232191 252549 283789 464382 505098 567578 851367 1702734 2554101 5108202 65813249 131626498 197439747 394879494 592319241 723945739 1184638482 1447891478 2171837217 4343674434 6515511651 13031023302