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30610705409 = 91933308711
BaseRepresentation
bin11100100000100010…
…100100110000000001
32221000022102221200222
4130200202210300001
51000142320033114
622021245352425
72132363463044
oct344042446001
987008387628
1030610705409
1111a88a44049
125b23568715
132b6aa6b64b
1416a55bac5b
15be255d98e
hex7208a4c01

30610705409 has 4 divisors (see below), whose sum is σ = 30644015040. Its totient is φ = 30577395780.

The previous prime is 30610705403. The next prime is 30610705429. The reversal of 30610705409 is 90450701603.

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: 90450701603 = 264749341647.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30610705409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30610705403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16653437 + ... + 16655274.

It is an arithmetic number, because the mean of its divisors is an integer number (7661003760).

Almost surely, 230610705409 is an apocalyptic number.

It is an amenable number.

30610705409 is a deficient number, since it is larger than the sum of its proper divisors (33309631).

30610705409 is an equidigital number, since it uses as much as digits as its factorization.

30610705409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33309630.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 30610705409 in words is "thirty billion, six hundred ten million, seven hundred five thousand, four hundred nine".

Divisors: 1 919 33308711 30610705409