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223413431 = 1491499419
BaseRepresentation
bin11010101000100…
…00010010110111
3120120101120121112
431110100102313
5424143212211
634100305235
75351661053
oct1524202267
9516346545
10223413431
111051248aa
12629a221b
13373942c7
1421958c63
151493188b
hexd5104b7

223413431 has 4 divisors (see below), whose sum is σ = 224913000. Its totient is φ = 221913864.

The previous prime is 223413401. The next prime is 223413433. The reversal of 223413431 is 134314322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134314322 = 267157161.

It is a cyclic number.

It is not a de Polignac number, because 223413431 - 226 = 156304567 is a prime.

It is a super-2 number, since 2×2234134312 = 99827122302383522, 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 = 223413397 and 223413406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223413433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749561 + ... + 749858.

It is an arithmetic number, because the mean of its divisors is an integer number (56228250).

Almost surely, 2223413431 is an apocalyptic number.

223413431 is a deficient number, since it is larger than the sum of its proper divisors (1499569).

223413431 is a wasteful number, since it uses less digits than its factorization.

223413431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499568.

The product of its digits is 1728, while the sum is 23.

The square root of 223413431 is about 14947.0208068364. The cubic root of 223413431 is about 606.7872211750.

Adding to 223413431 its reverse (134314322), we get a palindrome (357727753).

The spelling of 223413431 in words is "two hundred twenty-three million, four hundred thirteen thousand, four hundred thirty-one".

Divisors: 1 149 1499419 223413431