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33012310109 = 291138355521
BaseRepresentation
bin11110101111101011…
…111110000001011101
310011012200111010000012
4132233223332001131
51020102122410414
623055440213005
72246035002032
oct365753760135
9104180433005
1033012310109
1113000652219
12649390a165
13316149980c
141852537389
15cd330033e
hex7afafe05d

33012310109 has 4 divisors (see below), whose sum is σ = 34150665660. Its totient is φ = 31873954560.

The previous prime is 33012310091. The next prime is 33012310117. The reversal of 33012310109 is 90101321033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20448142009 + 12564168100 = 142997^2 + 112090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-33012310109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33012310139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569177732 + ... + 569177789.

It is an arithmetic number, because the mean of its divisors is an integer number (8537666415).

Almost surely, 233012310109 is an apocalyptic number.

It is an amenable number.

33012310109 is a deficient number, since it is larger than the sum of its proper divisors (1138355551).

33012310109 is a wasteful number, since it uses less digits than its factorization.

33012310109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138355550.

The product of its (nonzero) digits is 486, while the sum is 23.

The spelling of 33012310109 in words is "thirty-three billion, twelve million, three hundred ten thousand, one hundred nine".

Divisors: 1 29 1138355521 33012310109