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340393 is a prime number
BaseRepresentation
bin1010011000110101001
3122021221011
41103012221
541343033
611143521
72615254
oct1230651
9567834
10340393
11212819
12144ba1
13bbc21
148c09b
156accd
hex531a9

340393 has 2 divisors, whose sum is σ = 340394. Its totient is φ = 340392.

The previous prime is 340387. The next prime is 340397. The reversal of 340393 is 393043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243049 + 97344 = 493^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 340393 - 213 = 332201 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (340397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170196 + 170197.

It is an arithmetic number, because the mean of its divisors is an integer number (170197).

2340393 is an apocalyptic number.

It is an amenable number.

340393 is a deficient number, since it is larger than the sum of its proper divisors (1).

340393 is an equidigital number, since it uses as much as digits as its factorization.

340393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 340393 is about 583.4320868790. The cubic root of 340393 is about 69.8222018409.

Subtracting 340393 from its reverse (393043), we obtain a triangular number (52650 = T324).

The spelling of 340393 in words is "three hundred forty thousand, three hundred ninety-three".