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223413397 = 349640153
BaseRepresentation
bin11010101000100…
…00010010010101
3120120101120120021
431110100102111
5424143212042
634100305141
75351661004
oct1524202225
9516346507
10223413397
11105124879
12629a21b1
133739429c
1421958c3b
1514931867
hexd510495

223413397 has 4 divisors (see below), whose sum is σ = 224053900. Its totient is φ = 222772896.

The previous prime is 223413383. The next prime is 223413401. The reversal of 223413397 is 793314322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793314322 = 2396657161.

It can be written as a sum of positive squares in 2 ways, for example, as 133656721 + 89756676 = 11561^2 + 9474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-223413397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223413097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319728 + ... + 320425.

It is an arithmetic number, because the mean of its divisors is an integer number (56013475).

Almost surely, 2223413397 is an apocalyptic number.

It is an amenable number.

223413397 is a deficient number, since it is larger than the sum of its proper divisors (640503).

223413397 is an equidigital number, since it uses as much as digits as its factorization.

223413397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640502.

The product of its digits is 27216, while the sum is 34.

The square root of 223413397 is about 14947.0196694860. The cubic root of 223413397 is about 606.7871903939.

The spelling of 223413397 in words is "two hundred twenty-three million, four hundred thirteen thousand, three hundred ninety-seven".

Divisors: 1 349 640153 223413397