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131220333033 = 32317491108727
BaseRepresentation
bin111101000110101010…
…1110110000111101001
3110112200222012120211120
41322031111312013221
54122214401124113
6140140511045453
712323522266416
oct1721525660751
9415628176746
10131220333033
1150717503429
1221521510889
13c4b2967b9a
1464cb5ad10d
153630068a23
hex1e8d5761e9

131220333033 has 16 divisors (see below), whose sum is σ = 182579536896. Its totient is φ = 83671180560.

The previous prime is 131220333031. The next prime is 131220333037. The reversal of 131220333033 is 330333022131.

It is not a de Polignac number, because 131220333033 - 21 = 131220333031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131220332994 and 131220333012.

It is not an unprimeable number, because it can be changed into a prime (131220333031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152516 + ... + 1261242.

It is an arithmetic number, because the mean of its divisors is an integer number (11411221056).

Almost surely, 2131220333033 is an apocalyptic number.

It is an amenable number.

131220333033 is a deficient number, since it is larger than the sum of its proper divisors (51359203863).

131220333033 is a wasteful number, since it uses less digits than its factorization.

131220333033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126244.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 131220333033 its reverse (330333022131), we get a palindrome (461553355164).

The spelling of 131220333033 in words is "one hundred thirty-one billion, two hundred twenty million, three hundred thirty-three thousand, thirty-three".

Divisors: 1 3 23 69 17491 52473 108727 326181 402293 1206879 2500721 7502163 1901743957 5705231871 43740111011 131220333033