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20030020131 = 31110143313879
BaseRepresentation
bin10010101001111000…
…011101101000100011
31220200221000110010110
4102221320131220203
5312010141121011
613111320502403
71306235235102
oct225170355043
956627013113
1020030020131
118549473650
123a7001aa03
131b72988b24
14d8029c039
157c36eaba6
hex4a9e1da23

20030020131 has 32 divisors (see below), whose sum is σ = 29493112320. Its totient is φ = 11990592000.

The previous prime is 20030020093. The next prime is 20030020163. The reversal of 20030020131 is 13102003002.

It is a happy number.

It is not a de Polignac number, because 20030020131 - 26 = 20030020067 is a prime.

It is a super-2 number, since 2×200300201312 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20030020181) 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 31 ways as a sum of consecutive naturals, for example, 1436250 + ... + 1450128.

It is an arithmetic number, because the mean of its divisors is an integer number (921659760).

Almost surely, 220030020131 is an apocalyptic number.

20030020131 is a deficient number, since it is larger than the sum of its proper divisors (9463092189).

20030020131 is a wasteful number, since it uses less digits than its factorization.

20030020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14427.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20030020131 its reverse (13102003002), we get a palindrome (33132023133).

The spelling of 20030020131 in words is "twenty billion, thirty million, twenty thousand, one hundred thirty-one".

Divisors: 1 3 11 33 101 303 433 1111 1299 3333 4763 13879 14289 41637 43733 131199 152669 458007 481063 1401779 1443189 4205337 6009607 15419569 18028821 46258707 66105677 198317031 606970307 1820910921 6676673377 20030020131