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20310230 = 252031023
BaseRepresentation
bin100110101111…
…0100011010110
31102012212101202
41031132203112
520144411410
62003152502
7334430333
oct115364326
942185352
1020310230
1110512416
126975732
1342916b5
1429a998a
151bb2ca5
hex135e8d6

20310230 has 8 divisors (see below), whose sum is σ = 36558432. Its totient is φ = 8124088.

The previous prime is 20310217. The next prime is 20310247. The reversal of 20310230 is 3201302.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015502 + ... + 1015521.

It is an arithmetic number, because the mean of its divisors is an integer number (4569804).

Almost surely, 220310230 is an apocalyptic number.

20310230 is a deficient number, since it is larger than the sum of its proper divisors (16248202).

20310230 is a wasteful number, since it uses less digits than its factorization.

20310230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031030.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20310230 is about 4506.6872534047. The cubic root of 20310230 is about 272.8380564406.

Adding to 20310230 its reverse (3201302), we get a palindrome (23511532).

The spelling of 20310230 in words is "twenty million, three hundred ten thousand, two hundred thirty".

Divisors: 1 2 5 10 2031023 4062046 10155115 20310230