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20312039167 = 7191131351523
BaseRepresentation
bin10010111010101100…
…010001111011111111
31221102120200111111221
4102322230101323333
5313044340223132
613155313254211
71316231325040
oct227254217377
957376614457
1020312039167
118683686732
123b2a564367
131bb922c4b4
14da99108c7
157dd356e97
hex4bab11eff

20312039167 has 16 divisors (see below), whose sum is σ = 24651797760. Its totient is φ = 16348010112.

The previous prime is 20312039119. The next prime is 20312039177. The reversal of 20312039167 is 76193021302.

It is not a de Polignac number, because 20312039167 - 27 = 20312039039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312039117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660733 + ... + 690790.

It is an arithmetic number, because the mean of its divisors is an integer number (1540737360).

Almost surely, 220312039167 is an apocalyptic number.

20312039167 is a deficient number, since it is larger than the sum of its proper divisors (4339758593).

20312039167 is a wasteful number, since it uses less digits than its factorization.

20312039167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351662.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 20312039167 in words is "twenty billion, three hundred twelve million, thirty-nine thousand, one hundred sixty-seven".

Divisors: 1 7 19 113 133 791 2147 15029 1351523 9460661 25678937 152722099 179752559 1069054693 2901719881 20312039167