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30040443097 = 74291491871
BaseRepresentation
bin11011111110100011…
…001100100011011001
32212112120101121212121
4123332203030203121
5443010323134342
621444514541241
72112300360520
oct337643144331
985476347777
1030040443097
1111816057585
1259a4597821
132aa9885522
14164d9754b7
15bac467067
hex6fe8cc8d9

30040443097 has 4 divisors (see below), whose sum is σ = 34331934976. Its totient is φ = 25748951220.

The previous prime is 30040443073. The next prime is 30040443149. The reversal of 30040443097 is 79034404003.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79034404003 = 491091609367.

It is a cyclic number.

It is not a de Polignac number, because 30040443097 - 27 = 30040442969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30040440097) 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, 2145745929 + ... + 2145745942.

It is an arithmetic number, because the mean of its divisors is an integer number (8582983744).

Almost surely, 230040443097 is an apocalyptic number.

It is an amenable number.

30040443097 is a deficient number, since it is larger than the sum of its proper divisors (4291491879).

30040443097 is an equidigital number, since it uses as much as digits as its factorization.

30040443097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291491878.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 30040443097 in words is "thirty billion, forty million, four hundred forty-three thousand, ninety-seven".

Divisors: 1 7 4291491871 30040443097