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30352143 = 310398227
BaseRepresentation
bin111001111001…
…0001100001111
32010010001022110
41303302030033
530232232033
63002315103
7515663133
oct163621417
963101273
1030352143
1116151018
12a1b8a93
136399363
1440613c3
1529e8363
hex1cf230f

30352143 has 8 divisors (see below), whose sum is σ = 40862848. Its totient is φ = 20038104.

The previous prime is 30352141. The next prime is 30352207. The reversal of 30352143 is 34125303.

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

It is not a de Polignac number, because 30352143 - 21 = 30352141 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 (30352141) 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, 48805 + ... + 49422.

It is an arithmetic number, because the mean of its divisors is an integer number (5107856).

Almost surely, 230352143 is an apocalyptic number.

30352143 is a deficient number, since it is larger than the sum of its proper divisors (10510705).

30352143 is a wasteful number, since it uses less digits than its factorization.

30352143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98333.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 30352143 is about 5509.2779018670. The cubic root of 30352143 is about 311.9342913070.

Adding to 30352143 its reverse (34125303), we get a palindrome (64477446).

The spelling of 30352143 in words is "thirty million, three hundred fifty-two thousand, one hundred forty-three".

Divisors: 1 3 103 309 98227 294681 10117381 30352143