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223023121 = 1911738059
BaseRepresentation
bin11010100101100…
…01000000010001
3120112122202012121
431102301000101
5424043214441
634044054241
75345444116
oct1522610021
9515582177
10223023121
11104988632
1262834381
1337288759
142189690d
15148a5dd1
hexd4b1011

223023121 has 4 divisors (see below), whose sum is σ = 234761200. Its totient is φ = 211285044.

The previous prime is 223023113. The next prime is 223023133. The reversal of 223023121 is 121320322.

Adding to 223023121 its reverse (121320322), we get a palindrome (344343443).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223023121 - 23 = 223023113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223023095 and 223023104.

It is not an unprimeable number, because it can be changed into a prime (223023181) 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, 5869011 + ... + 5869048.

It is an arithmetic number, because the mean of its divisors is an integer number (58690300).

Almost surely, 2223023121 is an apocalyptic number.

It is an amenable number.

223023121 is a deficient number, since it is larger than the sum of its proper divisors (11738079).

223023121 is a wasteful number, since it uses less digits than its factorization.

223023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11738078.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 223023121 is about 14933.9586513422. The cubic root of 223023121 is about 606.4336566756.

The spelling of 223023121 in words is "two hundred twenty-three million, twenty-three thousand, one hundred twenty-one".

Divisors: 1 19 11738059 223023121