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30103302139 = 67449303017
BaseRepresentation
bin11100000010010010…
…111110111111111011
32212200221200012021021
4130002102332333323
5443122421132024
621455042123311
72113662563161
oct340222767773
985627605237
1030103302139
11118485904a9
125a01650537
132ab98c3921
141658059231
15bb2c31de4
hex7024beffb

30103302139 has 4 divisors (see below), whose sum is σ = 30552605224. Its totient is φ = 29653999056.

The previous prime is 30103302127. The next prime is 30103302161. The reversal of 30103302139 is 93120330103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93120330103 = 175859529517.

It is a cyclic number.

It is not a de Polignac number, because 30103302139 - 225 = 30069747707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30103302169) 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, 224651442 + ... + 224651575.

It is an arithmetic number, because the mean of its divisors is an integer number (7638151306).

Almost surely, 230103302139 is an apocalyptic number.

30103302139 is a deficient number, since it is larger than the sum of its proper divisors (449303085).

30103302139 is an equidigital number, since it uses as much as digits as its factorization.

30103302139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449303084.

The product of its (nonzero) digits is 1458, while the sum is 25.

The spelling of 30103302139 in words is "thirty billion, one hundred three million, three hundred two thousand, one hundred thirty-nine".

Divisors: 1 67 449303017 30103302139