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201131201310 = 235133891325761
BaseRepresentation
bin1011101101010001011…
…0101001001100011110
3201020011011211122222020
42323110112221030132
511243404041420220
6232222015401010
720350135001004
oct2732426511436
9636134748866
10201131201310
1178332357516
1232b92523166
1315c747a5870
149a40422a74
155372920040
hex2ed45a931e

201131201310 has 64 divisors (see below), whose sum is σ = 521183557440. Its totient is φ = 49381908480.

The previous prime is 201131201309. The next prime is 201131201353. The reversal of 201131201310 is 13102131102.

It is a happy number.

It is a super-2 number, since 2×2011312013102 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201131201310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511171 + ... + 814590.

It is an arithmetic number, because the mean of its divisors is an integer number (8143493085).

Almost surely, 2201131201310 is an apocalyptic number.

201131201310 is an abundant number, since it is smaller than the sum of its proper divisors (320052356130).

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

201131201310 is a wasteful number, since it uses less digits than its factorization.

201131201310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326173.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 201131201310 its reverse (13102131102), we get a palindrome (214233332412).

The spelling of 201131201310 in words is "two hundred one billion, one hundred thirty-one million, two hundred one thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 389 390 778 1167 1945 2334 3890 5057 5835 10114 11670 15171 25285 30342 50570 75855 151710 1325761 2651522 3977283 6628805 7954566 13257610 17234893 19886415 34469786 39772830 51704679 86174465 103409358 172348930 258523395 515721029 517046790 1031442058 1547163087 2578605145 3094326174 5157210290 6704373377 7735815435 13408746754 15471630870 20113120131 33521866885 40226240262 67043733770 100565600655 201131201310