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30322141 = 83365327
BaseRepresentation
bin111001110101…
…0110111011101
32010001112011021
41303222313131
530230302031
63001524141
7515506513
oct163526735
963045137
1030322141
1116130523
12a1a3651
1363887c5
1440544b3
1529de511
hex1ceaddd

30322141 has 4 divisors (see below), whose sum is σ = 30687552. Its totient is φ = 29956732.

The previous prime is 30322121. The next prime is 30322147. The reversal of 30322141 is 14122303.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14122303 = 131086331.

It is a cyclic number.

It is not a de Polignac number, because 30322141 - 25 = 30322109 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 (30322147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182581 + ... + 182746.

It is an arithmetic number, because the mean of its divisors is an integer number (7671888).

Almost surely, 230322141 is an apocalyptic number.

It is an amenable number.

30322141 is a deficient number, since it is larger than the sum of its proper divisors (365411).

30322141 is an equidigital number, since it uses as much as digits as its factorization.

30322141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365410.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30322141 is about 5506.5543672972. The cubic root of 30322141 is about 311.8314788207.

Adding to 30322141 its reverse (14122303), we get a palindrome (44444444).

The spelling of 30322141 in words is "thirty million, three hundred twenty-two thousand, one hundred forty-one".

Divisors: 1 83 365327 30322141