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20020130131 = 199557180617
BaseRepresentation
bin10010101001010010…
…101111000101010011
31220200020101222121011
4102221102233011103
5312000123131011
613110324511351
71306055204221
oct225122570523
956606358534
1020020130131
1185439290a1
123a6884b557
131b70905361
14d7cc45b11
157c28e5621
hex4a94af153

20020130131 has 8 divisors (see below), whose sum is σ = 20156968800. Its totient is φ = 19883654208.

The previous prime is 20020130129. The next prime is 20020130167. The reversal of 20020130131 is 13103102002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20020130131 - 21 = 20020130129 is a prime.

It is a super-2 number, since 2×200201301312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020130111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20535 + ... + 201151.

It is an arithmetic number, because the mean of its divisors is an integer number (2519621100).

Almost surely, 220020130131 is an apocalyptic number.

20020130131 is a deficient number, since it is larger than the sum of its proper divisors (136838669).

20020130131 is a wasteful number, since it uses less digits than its factorization.

20020130131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181373.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20020130131 its reverse (13103102002), we get a palindrome (33123232133).

The spelling of 20020130131 in words is "twenty billion, twenty million, one hundred thirty thousand, one hundred thirty-one".

Divisors: 1 199 557 110843 180617 35942783 100603669 20020130131