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30148471351 = 97310808983
BaseRepresentation
bin11100000100111111…
…010010101000110111
32212211002200000210001
4130010333102220313
5443221002040401
621503334212131
72115051530635
oct340477225067
985732600701
1030148471351
1111871031829
125a147b4047
132ac607a27b
141660056355
15bb6ba5601
hex704fd2a37

30148471351 has 4 divisors (see below), whose sum is σ = 30459280432. Its totient is φ = 29837662272.

The previous prime is 30148471291. The next prime is 30148471439. The reversal of 30148471351 is 15317484103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15317484103 = 29528189107.

It is a cyclic number.

It is not a de Polignac number, because 30148471351 - 29 = 30148470839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30148471351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30148474351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155404395 + ... + 155404588.

It is an arithmetic number, because the mean of its divisors is an integer number (7614820108).

Almost surely, 230148471351 is an apocalyptic number.

30148471351 is a deficient number, since it is larger than the sum of its proper divisors (310809081).

30148471351 is an equidigital number, since it uses as much as digits as its factorization.

30148471351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310809080.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 30148471351 in words is "thirty billion, one hundred forty-eight million, four hundred seventy-one thousand, three hundred fifty-one".

Divisors: 1 97 310808983 30148471351