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858714442931 = 31731267129947
BaseRepresentation
bin11000111111011110101…
…11101000110010110011
310001002111021201110222002
430133233113220302303
5103032121344133211
61454253222404215
7116016513221642
oct14375727506263
93032437643862
10858714442931
113011a6a097a4
1211a51189066b
1362c902877b7
142d7c21b7359
151750cc5903b
hexc7ef5e8cb3

858714442931 has 16 divisors (see below), whose sum is σ = 898658500608. Its totient is φ = 819538171200.

The previous prime is 858714442907. The next prime is 858714442939. The reversal of 858714442931 is 139244417858.

It is not a de Polignac number, because 858714442931 - 214 = 858714426547 is a prime.

It is a super-2 number, since 2×8587144429312 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858714442939) 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, 28659500 + ... + 28689446.

It is an arithmetic number, because the mean of its divisors is an integer number (56166156288).

Almost surely, 2858714442931 is an apocalyptic number.

858714442931 is a deficient number, since it is larger than the sum of its proper divisors (39944057677).

858714442931 is a wasteful number, since it uses less digits than its factorization.

858714442931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42722.

The product of its digits is 7741440, while the sum is 56.

The spelling of 858714442931 in words is "eight hundred fifty-eight billion, seven hundred fourteen million, four hundred forty-two thousand, nine hundred thirty-one".

Divisors: 1 31 73 2263 12671 29947 392801 924983 928357 2186131 28674473 67770061 379458437 11763211547 27700465901 858714442931