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30380815371 = 310126938457
BaseRepresentation
bin11100010010110101…
…100111010000001011
32220102021212022212010
4130102311213100023
5444204442042441
621542354151003
72123602445514
oct342265472013
986367768763
1030380815371
11119801a6285
125a7a582463
132b3224a43a
141682c57a0b
15bcc29d116
hex712d6740b

30380815371 has 4 divisors (see below), whose sum is σ = 40507753832. Its totient is φ = 20253876912.

The previous prime is 30380815303. The next prime is 30380815411. The reversal of 30380815371 is 17351808303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17351808303 = 35783936101.

It is not a de Polignac number, because 30380815371 - 218 = 30380553227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30380813371) 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, 5063469226 + ... + 5063469231.

It is an arithmetic number, because the mean of its divisors is an integer number (10126938458).

Almost surely, 230380815371 is an apocalyptic number.

30380815371 is a deficient number, since it is larger than the sum of its proper divisors (10126938461).

30380815371 is a wasteful number, since it uses less digits than its factorization.

30380815371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10126938460.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 30380815371 in words is "thirty billion, three hundred eighty million, eight hundred fifteen thousand, three hundred seventy-one".

Divisors: 1 3 10126938457 30380815371