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2656131343 = 2860792849
BaseRepresentation
bin1001111001010001…
…0101100100001111
320212002222110012221
42132110111210033
520414432200333
61115322040211
7122551513105
oct23624254417
96762873187
102656131343
111143353878
12621649067
13334397068
141b2a93c75
151082bbd2d
hex9e51590f

2656131343 has 4 divisors (see below), whose sum is σ = 2656252800. Its totient is φ = 2656009888.

The previous prime is 2656131341. The next prime is 2656131403. The reversal of 2656131343 is 3431316562.

2656131343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3431316562 = 21715658281.

It is a cyclic number.

It is not a de Polignac number, because 2656131343 - 21 = 2656131341 is a prime.

It is a super-2 number, since 2×26561313432 = 14110067422533967298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2656131299 and 2656131308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656131341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17818 + ... + 75031.

It is an arithmetic number, because the mean of its divisors is an integer number (664063200).

Almost surely, 22656131343 is an apocalyptic number.

2656131343 is a deficient number, since it is larger than the sum of its proper divisors (121457).

2656131343 is an equidigital number, since it uses as much as digits as its factorization.

2656131343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121456.

The product of its digits is 38880, while the sum is 34.

The square root of 2656131343 is about 51537.6691653784. The cubic root of 2656131343 is about 1384.8939421018.

The spelling of 2656131343 in words is "two billion, six hundred fifty-six million, one hundred thirty-one thousand, three hundred forty-three".

Divisors: 1 28607 92849 2656131343