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2081051023 = 2618379481
BaseRepresentation
bin111110000001010…
…0101000110001111
312101000212100022211
41330002211012033
513230222113043
6542300051251
7102366433102
oct17402450617
95330770284
102081051023
11978776487
124a0b33b27
132721b4c4c
1415a556739
15c2a72a9d
hex7c0a518f

2081051023 has 4 divisors (see below), whose sum is σ = 2081156688. Its totient is φ = 2080945360.

The previous prime is 2081051003. The next prime is 2081051029. The reversal of 2081051023 is 3201501802.

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: 3201501802 = 21600750901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2081051023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2081050985 and 2081051003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081051029) 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, 13558 + ... + 65923.

It is an arithmetic number, because the mean of its divisors is an integer number (520289172).

Almost surely, 22081051023 is an apocalyptic number.

2081051023 is a deficient number, since it is larger than the sum of its proper divisors (105665).

2081051023 is an equidigital number, since it uses as much as digits as its factorization.

2081051023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105664.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2081051023 is about 45618.5381506247. The cubic root of 2081051023 is about 1276.7158286584.

Adding to 2081051023 its reverse (3201501802), we get a palindrome (5282552825).

The spelling of 2081051023 in words is "two billion, eighty-one million, fifty-one thousand, twenty-three".

Divisors: 1 26183 79481 2081051023