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51031013151 = 3177011427401
BaseRepresentation
bin101111100001101011…
…110111011100011111
311212201102212001210010
4233201223313130133
51314002414410101
635235431414303
73454411311666
oct574153673437
9155642761703
1051031013151
111a707749538
129a82224393
134a73548091
142681631ddd
1514da1502d6
hexbe1af771f

51031013151 has 16 divisors (see below), whose sum is σ = 72146606688. Its totient is φ = 31973760000.

The previous prime is 51031013141. The next prime is 51031013167. The reversal of 51031013151 is 15131013015.

It is not a de Polignac number, because 51031013151 - 27 = 51031013023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031013141) 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, 677950 + ... + 749451.

It is an arithmetic number, because the mean of its divisors is an integer number (4509162918).

Almost surely, 251031013151 is an apocalyptic number.

51031013151 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

51031013151 is a deficient number, since it is larger than the sum of its proper divisors (21115593537).

51031013151 is a wasteful number, since it uses less digits than its factorization.

51031013151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428122.

The product of its (nonzero) digits is 225, while the sum is 21.

Adding to 51031013151 its reverse (15131013015), we get a palindrome (66162026166).

The spelling of 51031013151 in words is "fifty-one billion, thirty-one million, thirteen thousand, one hundred fifty-one".

Divisors: 1 3 17 51 701 2103 11917 35751 1427401 4282203 24265817 72797451 1000608101 3001824303 17010337717 51031013151