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30968843879 = 231797522187
BaseRepresentation
bin11100110101111000…
…110000111001100111
32221221021100021022202
4130311320300321213
51001411011001004
622121001445115
72144302554401
oct346570607147
987837307282
1030968843879
1112152117856
1260034a079b
132bc7013cbc
1416dada5b71
15c13c03b1e
hex735e30e67

30968843879 has 8 divisors (see below), whose sum is σ = 32495852160. Its totient is φ = 29456880376.

The previous prime is 30968843827. The next prime is 30968843903. The reversal of 30968843879 is 97834886903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30968843879 - 28 = 30968843623 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 (30968843819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3756977 + ... + 3765210.

It is an arithmetic number, because the mean of its divisors is an integer number (4061981520).

Almost surely, 230968843879 is an apocalyptic number.

30968843879 is a deficient number, since it is larger than the sum of its proper divisors (1527008281).

30968843879 is a wasteful number, since it uses less digits than its factorization.

30968843879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7522389.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 30968843879 in words is "thirty billion, nine hundred sixty-eight million, eight hundred forty-three thousand, eight hundred seventy-nine".

Divisors: 1 23 179 4117 7522187 173010301 1346471473 30968843879