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130020133 = 671940599
BaseRepresentation
bin1111011111111…
…11001100100101
3100001122201002111
413233333030211
5231241121013
620522441021
73136103305
oct757771445
9301581074
10130020133
1167436061
1237663171
1320c249b9
14133a7605
15b63473d
hex7bff325

130020133 has 4 divisors (see below), whose sum is σ = 131960800. Its totient is φ = 128079468.

The previous prime is 130020103. The next prime is 130020151. The reversal of 130020133 is 331020031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331020031 = 595610509.

It is a 7-Lehmer number, since φ(130020133) divides (130020133-1)7.

It is a cyclic number.

It is not a de Polignac number, because 130020133 - 25 = 130020101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130020103) 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 3 ways as a sum of consecutive naturals, for example, 970233 + ... + 970366.

It is an arithmetic number, because the mean of its divisors is an integer number (32990200).

Almost surely, 2130020133 is an apocalyptic number.

It is an amenable number.

130020133 is a deficient number, since it is larger than the sum of its proper divisors (1940667).

130020133 is an equidigital number, since it uses as much as digits as its factorization.

130020133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940666.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 130020133 is about 11402.6371072660. The cubic root of 130020133 is about 506.6058517631.

Adding to 130020133 its reverse (331020031), we get a palindrome (461040164).

The spelling of 130020133 in words is "one hundred thirty million, twenty thousand, one hundred thirty-three".

Divisors: 1 67 1940599 130020133