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311130133100 = 225211712656961
BaseRepresentation
bin1001000011100001100…
…11010001001001101100
31002202002012020101000222
410201300303101021230
520044143303224400
6354533050310512
731323044332103
oct4416063211154
91082065211028
10311130133100
1110aa49938006
1250370a28438
13234549ba497
14110b740903a
15815e8a6185
hex4870cd126c

311130133100 has 36 divisors (see below), whose sum is σ = 675729203688. Its totient is φ = 124345728000.

The previous prime is 311130133099. The next prime is 311130133159. The reversal of 311130133100 is 1331031113.

It is a super-2 number, since 2×3111301331002 (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1211381 + ... + 1445580.

It is an arithmetic number, because the mean of its divisors is an integer number (18770255658).

Almost surely, 2311130133100 is an apocalyptic number.

It is an amenable number.

311130133100 is an abundant number, since it is smaller than the sum of its proper divisors (364599070588).

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

311130133100 is a wasteful number, since it uses less digits than its factorization.

311130133100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658146 (or 2658139 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 311130133100 its reverse (1331031113), we get a palindrome (312461164213).

The spelling of 311130133100 in words is "three hundred eleven billion, one hundred thirty million, one hundred thirty-three thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1171 2342 4684 5855 11710 23420 29275 58550 117100 2656961 5313922 10627844 13284805 26569610 53139220 66424025 132848050 265696100 3111301331 6222602662 12445205324 15556506655 31113013310 62226026620 77782533275 155565066550 311130133100