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20430032101 = 711577732371
BaseRepresentation
bin10011000001101110…
…011000110011100101
31221201210201011101121
4103001232120303211
5313320042011401
613215130253541
71322163256543
oct230156306345
957653634347
1020430032101
118734247556
123b61b872b1
131c078029bb
14dbb466d93
157e88b2ca1
hex4c1b98ce5

20430032101 has 16 divisors (see below), whose sum is σ = 20885516928. Its totient is φ = 19979668800.

The previous prime is 20430031991. The next prime is 20430032113. The reversal of 20430032101 is 10123003402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20430032101 - 215 = 20429999333 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 (20430036101) 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 15 ways as a sum of consecutive naturals, for example, 8615446 + ... + 8617816.

It is an arithmetic number, because the mean of its divisors is an integer number (1305344808).

Almost surely, 220430032101 is an apocalyptic number.

It is an amenable number.

20430032101 is a deficient number, since it is larger than the sum of its proper divisors (455484827).

20430032101 is a wasteful number, since it uses less digits than its factorization.

20430032101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20430032101 its reverse (10123003402), we get a palindrome (30553035503).

The spelling of 20430032101 in words is "twenty billion, four hundred thirty million, thirty-two thousand, one hundred one".

Divisors: 1 71 157 773 2371 11147 54883 121361 168341 372247 1832783 8616631 26429537 130127593 287746931 20430032101