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131110030238 = 21161157622277
BaseRepresentation
bin111101000011011000…
…1000100101110011110
3110112102021122121211212
41322012301010232132
54122003131431423
6140121530544422
712321012604055
oct1720661045636
9415367577755
10131110030238
11506702152a0
12214b0598112
13c495b57a65
1464baa9939c
15362552b578
hex1e86c44b9e

131110030238 has 32 divisors (see below), whose sum is σ = 219450070368. Its totient is φ = 58245033600.

The previous prime is 131110030237. The next prime is 131110030267. The reversal of 131110030238 is 832030011131.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131110030237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100445 + ... + 521832.

It is an arithmetic number, because the mean of its divisors is an integer number (6857814699).

Almost surely, 2131110030238 is an apocalyptic number.

131110030238 is a deficient number, since it is larger than the sum of its proper divisors (88340040130).

131110030238 is a wasteful number, since it uses less digits than its factorization.

131110030238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622508.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131110030238 its reverse (832030011131), we get a palindrome (963140041369).

The spelling of 131110030238 in words is "one hundred thirty-one billion, one hundred ten million, thirty thousand, two hundred thirty-eight".

Divisors: 1 2 11 22 61 122 157 314 671 1342 1727 3454 9577 19154 105347 210694 622277 1244554 6845047 13690094 37958897 75917794 97697489 195394978 417547867 835095734 1074672379 2149344758 5959546829 11919093658 65555015119 131110030238