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223300031 = 239708697
BaseRepresentation
bin11010100111101…
…00100110111111
3120120011211001112
431103310212333
5424131100111
634054032235
75351006333
oct1523644677
9516154045
10223300031
11105057689
126294867b
13373547c6
14219297c3
151490ce8b
hexd4f49bf

223300031 has 4 divisors (see below), whose sum is σ = 233008752. Its totient is φ = 213591312.

The previous prime is 223300019. The next prime is 223300039. The reversal of 223300031 is 130003322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-223300031 is a prime.

It is a super-2 number, since 2×2233000312 = 99725807689201922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223299979 and 223300015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223300039) 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, 4854326 + ... + 4854371.

It is an arithmetic number, because the mean of its divisors is an integer number (58252188).

Almost surely, 2223300031 is an apocalyptic number.

223300031 is a deficient number, since it is larger than the sum of its proper divisors (9708721).

223300031 is an equidigital number, since it uses as much as digits as its factorization.

223300031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9708720.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 223300031 is about 14943.2269272738. The cubic root of 223300031 is about 606.6845396189.

Adding to 223300031 its reverse (130003322), we get a palindrome (353303353).

The spelling of 223300031 in words is "two hundred twenty-three million, three hundred thousand, thirty-one".

Divisors: 1 23 9708697 223300031