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230011221 = 3116970037
BaseRepresentation
bin11011011010110…
…11000101010101
3121000210210002010
431231123011111
5432340324341
634453534433
75462030436
oct1555330525
9530723063
10230011221
11108920920
1265044419
133886441b
142279548d
15152d6716
hexdb5b155

230011221 has 8 divisors (see below), whose sum is σ = 334561824. Its totient is φ = 139400720.

The previous prime is 230011219. The next prime is 230011231. The reversal of 230011221 is 122110032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230011221 - 21 = 230011219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230011197 and 230011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230011231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3484986 + ... + 3485051.

It is an arithmetic number, because the mean of its divisors is an integer number (41820228).

Almost surely, 2230011221 is an apocalyptic number.

It is an amenable number.

230011221 is a deficient number, since it is larger than the sum of its proper divisors (104550603).

230011221 is a wasteful number, since it uses less digits than its factorization.

230011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6970051.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 230011221 is about 15166.1208290057. The cubic root of 230011221 is about 612.7025311627.

Adding to 230011221 its reverse (122110032), we get a palindrome (352121253).

The spelling of 230011221 in words is "two hundred thirty million, eleven thousand, two hundred twenty-one".

Divisors: 1 3 11 33 6970037 20910111 76670407 230011221