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30513750043 = 76779643031
BaseRepresentation
bin11100011010110000…
…101110000000011011
32220202120000002221111
4130122300232000123
5444443010000133
622003503321151
72130105411250
oct343260560033
986676002844
1030513750043
1111a39242047
125ab6bb01b7
132b539528ca
14169677d427
15bd8cab1cd
hex71ac2e01b

30513750043 has 8 divisors (see below), whose sum is σ = 34878055680. Its totient is φ = 26150744040.

The previous prime is 30513750023. The next prime is 30513750061. The reversal of 30513750043 is 34005731503.

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 30513750043 - 213 = 30513741851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30513749987 and 30513750014.

It is not an unprimeable number, because it can be changed into a prime (30513750023) 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, 274063 + ... + 368968.

It is an arithmetic number, because the mean of its divisors is an integer number (4359756960).

Almost surely, 230513750043 is an apocalyptic number.

30513750043 is a deficient number, since it is larger than the sum of its proper divisors (4364305637).

30513750043 is an equidigital number, since it uses as much as digits as its factorization.

30513750043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649817.

The product of its (nonzero) digits is 18900, while the sum is 31.

The spelling of 30513750043 in words is "thirty billion, five hundred thirteen million, seven hundred fifty thousand, forty-three".

Divisors: 1 7 6779 47453 643031 4501217 4359107149 30513750043