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314081281 = 2910830389
BaseRepresentation
bin10010101110001…
…000000000000001
3210212222222112001
4102232020000001
51120401100111
651055504001
710532434603
oct2256100001
9725888461
10314081281
11151321a08
1289228001
13500bb217
142d9db173
151c8911c1
hex12b88001

314081281 has 4 divisors (see below), whose sum is σ = 324911700. Its totient is φ = 303250864.

The previous prime is 314081269. The next prime is 314081303. The reversal of 314081281 is 182180413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 182180413 = 473876179.

It can be written as a sum of positive squares in 2 ways, for example, as 147258225 + 166823056 = 12135^2 + 12916^2 .

It is a cyclic number.

It is not a de Polignac number, because 314081281 - 217 = 313950209 is a prime.

It is a super-2 number, since 2×3140812812 = 197294102149201922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (314081221) 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, 5415166 + ... + 5415223.

It is an arithmetic number, because the mean of its divisors is an integer number (81227925).

It is a Proth number, since it is equal to 9585 ⋅ 215 + 1 and 9585 < 215.

Almost surely, 2314081281 is an apocalyptic number.

It is an amenable number.

314081281 is a deficient number, since it is larger than the sum of its proper divisors (10830419).

314081281 is a wasteful number, since it uses less digits than its factorization.

314081281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830418.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 314081281 is about 17722.3384743662. The cubic root of 314081281 is about 679.7470808256.

The spelling of 314081281 in words is "three hundred fourteen million, eighty-one thousand, two hundred eighty-one".

Divisors: 1 29 10830389 314081281