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20430301 = 191075279
BaseRepresentation
bin100110111101…
…1110111011101
31102102222002211
41031323313131
520212232201
62005520421
7335440363
oct115736735
942388084
1020430301
1110594651
126a13111
134304248
1429db633
151bd8651
hex137bddd

20430301 has 4 divisors (see below), whose sum is σ = 21505600. Its totient is φ = 19355004.

The previous prime is 20430251. The next prime is 20430307. The reversal of 20430301 is 10303402.

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.

It is a cyclic number.

It is not a de Polignac number, because 20430301 - 27 = 20430173 is a prime.

It is a super-3 number, since 3×204303013 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537621 + ... + 537658.

It is an arithmetic number, because the mean of its divisors is an integer number (5376400).

Almost surely, 220430301 is an apocalyptic number.

It is an amenable number.

20430301 is a deficient number, since it is larger than the sum of its proper divisors (1075299).

20430301 is a wasteful number, since it uses less digits than its factorization.

20430301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075298.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20430301 is about 4519.9890486593. The cubic root of 20430301 is about 273.3746594597.

Adding to 20430301 its reverse (10303402), we get a palindrome (30733703).

The spelling of 20430301 in words is "twenty million, four hundred thirty thousand, three hundred one".

Divisors: 1 19 1075279 20430301