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30842349079 = 109282957331
BaseRepresentation
bin11100101110010110…
…001110011000010111
32221121110022200002011
4130232112032120113
51001131120132304
622100242325051
72141205433033
oct345626163027
987543280064
1030842349079
111209777a3a3
125b89059787
132ba6a54ac9
1416c82791c3
15c07a68c04
hex72e58e617

30842349079 has 4 divisors (see below), whose sum is σ = 31125306520. Its totient is φ = 30559391640.

The previous prime is 30842349073. The next prime is 30842349113. The reversal of 30842349079 is 97094324803.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97094324803 = 713870617829.

It is a cyclic number.

It is not a de Polignac number, because 30842349079 - 213 = 30842340887 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 (30842349073) 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, 141478557 + ... + 141478774.

It is an arithmetic number, because the mean of its divisors is an integer number (7781326630).

Almost surely, 230842349079 is an apocalyptic number.

30842349079 is a deficient number, since it is larger than the sum of its proper divisors (282957441).

30842349079 is a wasteful number, since it uses less digits than its factorization.

30842349079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282957440.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 30842349079 in words is "thirty billion, eight hundred forty-two million, three hundred forty-nine thousand, seventy-nine".

Divisors: 1 109 282957331 30842349079