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30251141 = 234432969
BaseRepresentation
bin111001101100…
…1100010000101
32002220220202122
41303121202011
530221014031
63000215325
7515062514
oct163314205
962826678
1030251141
1116092148
12a16a545
1363623ab
14403667b
1529c847b
hex1cd9885

30251141 has 8 divisors (see below), whose sum is σ = 31648320. Its totient is φ = 28860832.

The previous prime is 30251131. The next prime is 30251159. The reversal of 30251141 is 14115203.

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 30251141 - 26 = 30251077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30251131) 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, 8705 + ... + 11673.

It is an arithmetic number, because the mean of its divisors is an integer number (3956040).

Almost surely, 230251141 is an apocalyptic number.

It is an amenable number.

30251141 is a deficient number, since it is larger than the sum of its proper divisors (1397179).

30251141 is a wasteful number, since it uses less digits than its factorization.

30251141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 30251141 is about 5500.1037262946. The cubic root of 30251141 is about 311.5879017155.

Adding to 30251141 its reverse (14115203), we get a palindrome (44366344).

The spelling of 30251141 in words is "thirty million, two hundred fifty-one thousand, one hundred forty-one".

Divisors: 1 23 443 2969 10189 68287 1315267 30251141