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30680673461 = 233271315243
BaseRepresentation
bin11100100100101101…
…011110110010110101
32221012012002200211022
4130210231132302311
51000313223022321
622032225150525
72134203264404
oct344455366265
987165080738
1030680673461
1112014493089
125b42a8b445
132b7c3c8769
1416b09d163b
15be877edab
hex724b5ecb5

30680673461 has 4 divisors (see below), whose sum is σ = 30682012032. Its totient is φ = 30679334892.

The previous prime is 30680673427. The next prime is 30680673479. The reversal of 30680673461 is 16437608603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30680673461 - 234 = 13500804277 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 (30680673421) 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, 634295 + ... + 680948.

It is an arithmetic number, because the mean of its divisors is an integer number (7670503008).

Almost surely, 230680673461 is an apocalyptic number.

It is an amenable number.

30680673461 is a deficient number, since it is larger than the sum of its proper divisors (1338571).

30680673461 is a wasteful number, since it uses less digits than its factorization.

30680673461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338570.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 30680673461 in words is "thirty billion, six hundred eighty million, six hundred seventy-three thousand, four hundred sixty-one".

Divisors: 1 23327 1315243 30680673461