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340023 = 3113341
BaseRepresentation
bin1010011000000110111
3122021102110
41103000313
541340043
611142103
72614215
oct1230067
9567373
10340023
11212512
12144933
13bb9c8
148bcb5
156ab33
hex53037

340023 has 4 divisors (see below), whose sum is σ = 453368. Its totient is φ = 226680.

The previous prime is 340007. The next prime is 340027. The reversal of 340023 is 320043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320043 = 3106681.

It is not a de Polignac number, because 340023 - 24 = 340007 is a prime.

It is a D-number.

It is a Duffinian number.

340023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 339990 and 340008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340027) 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, 56668 + ... + 56673.

It is an arithmetic number, because the mean of its divisors is an integer number (113342).

2340023 is an apocalyptic number.

340023 is a deficient number, since it is larger than the sum of its proper divisors (113345).

340023 is a wasteful number, since it uses less digits than its factorization.

340023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113344.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 340023 is about 583.1149114883. The cubic root of 340023 is about 69.7968942497.

Adding to 340023 its reverse (320043), we get a palindrome (660066).

The spelling of 340023 in words is "three hundred forty thousand, twenty-three", and thus it is an iban number.

Divisors: 1 3 113341 340023