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20313201 = 310763281
BaseRepresentation
bin100110101111…
…1010001110001
31102020000110210
41031133101301
520200010301
62003214333
7334442106
oct115372161
942200423
1020313201
1110514677
1269773a9
134292b5c
1429aaaad
151bb3ad6
hex135f471

20313201 has 8 divisors (see below), whose sum is σ = 27337824. Its totient is φ = 13415360.

The previous prime is 20313197. The next prime is 20313203. The reversal of 20313201 is 10231302.

It is a happy number.

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 20313201 - 22 = 20313197 is a prime.

It is a super-2 number, since 2×203132012 = 825252269732802, which contains 22 as substring.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (20313203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31320 + ... + 31961.

It is an arithmetic number, because the mean of its divisors is an integer number (3417228).

Almost surely, 220313201 is an apocalyptic number.

It is an amenable number.

20313201 is a deficient number, since it is larger than the sum of its proper divisors (7024623).

20313201 is a wasteful number, since it uses less digits than its factorization.

20313201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63391.

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

The square root of 20313201 is about 4507.0168626265. The cubic root of 20313201 is about 272.8513594632.

Adding to 20313201 its reverse (10231302), we get a palindrome (30544503).

The spelling of 20313201 in words is "twenty million, three hundred thirteen thousand, two hundred one".

Divisors: 1 3 107 321 63281 189843 6771067 20313201