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30231141 = 310077047
BaseRepresentation
bin111001101010…
…0101001100101
32002212220022220
41303110221211
530214344031
62555542553
7514650303
oct163245145
962786286
1030231141
1116079116
12a15aa59
136356265
14402d273
1529c2596
hex1cd4a65

30231141 has 4 divisors (see below), whose sum is σ = 40308192. Its totient is φ = 20154092.

The previous prime is 30231133. The next prime is 30231181. The reversal of 30231141 is 14113203.

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 30231141 - 23 = 30231133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30231141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5038521 + ... + 5038526.

It is an arithmetic number, because the mean of its divisors is an integer number (10077048).

Almost surely, 230231141 is an apocalyptic number.

It is an amenable number.

30231141 is a deficient number, since it is larger than the sum of its proper divisors (10077051).

30231141 is a wasteful number, since it uses less digits than its factorization.

30231141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077050.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 30231141 is about 5498.2852781572. The cubic root of 30231141 is about 311.5192196574.

Adding to 30231141 its reverse (14113203), we get a palindrome (44344344).

The spelling of 30231141 in words is "thirty million, two hundred thirty-one thousand, one hundred forty-one".

Divisors: 1 3 10077047 30231141