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30388245343 = 105012893843
BaseRepresentation
bin11100010011010001…
…111101001101011111
32220102210211210212021
4130103101331031133
5444213342322333
621543221321011
72124022552321
oct342321751537
986383753767
1030388245343
1111984410555
125a80b66167
132b3394c281
141683c2d611
15bccc6982d
hex71347d35f

30388245343 has 4 divisors (see below), whose sum is σ = 30391149688. Its totient is φ = 30385341000.

The previous prime is 30388245337. The next prime is 30388245359. The reversal of 30388245343 is 34354288303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34354288303 = 191808120437.

It is a cyclic number.

It is not a de Polignac number, because 30388245343 - 217 = 30388114271 is a prime.

It is a super-2 number, since 2×303882453432 (a number of 22 digits) contains 22 as substring.

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 30388245343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30388245323) 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, 1436421 + ... + 1457422.

It is an arithmetic number, because the mean of its divisors is an integer number (7597787422).

Almost surely, 230388245343 is an apocalyptic number.

30388245343 is a deficient number, since it is larger than the sum of its proper divisors (2904345).

30388245343 is a wasteful number, since it uses less digits than its factorization.

30388245343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904344.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 30388245343 in words is "thirty billion, three hundred eighty-eight million, two hundred forty-five thousand, three hundred forty-three".

Divisors: 1 10501 2893843 30388245343