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30143201 = 112740291
BaseRepresentation
bin111001011111…
…1001011100001
32002201102200212
41302333023201
530204040301
62554023505
7514133024
oct162771341
962642625
1030143201
1116019040
12a117b95
13632521a
1440091bb
1529a64bb
hex1cbf2e1

30143201 has 4 divisors (see below), whose sum is σ = 32883504. Its totient is φ = 27402900.

The previous prime is 30143189. The next prime is 30143207. The reversal of 30143201 is 10234103.

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 30143201 - 26 = 30143137 is a prime.

It is a super-2 number, since 2×301432012 = 1817225133052802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30143207) 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, 1370135 + ... + 1370156.

It is an arithmetic number, because the mean of its divisors is an integer number (8220876).

Almost surely, 230143201 is an apocalyptic number.

It is an amenable number.

30143201 is a deficient number, since it is larger than the sum of its proper divisors (2740303).

30143201 is a wasteful number, since it uses less digits than its factorization.

30143201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740302.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30143201 is about 5490.2824153225. The cubic root of 30143201 is about 311.2168646951.

Adding to 30143201 its reverse (10234103), we get a palindrome (40377304).

The spelling of 30143201 in words is "thirty million, one hundred forty-three thousand, two hundred one".

Divisors: 1 11 2740291 30143201