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230012291 = 1132035507
BaseRepresentation
bin11011011010110…
…11010110000011
3121000210211112202
431231123112003
5432340343131
634453543415
75462033525
oct1555332603
9530724482
10230012291
11108921703
1265044b6b
1338864a62
1422795a15
15152d6bcb
hexdb5b583

230012291 has 4 divisors (see below), whose sum is σ = 232047912. Its totient is φ = 227976672.

The previous prime is 230012243. The next prime is 230012327. The reversal of 230012291 is 192210032.

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

It is a cyclic number.

It is not a de Polignac number, because 230012291 - 226 = 162903427 is a prime.

It is a super-2 number, since 2×2300122912 = 105811308022137362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230012221) 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, 1017641 + ... + 1017866.

It is an arithmetic number, because the mean of its divisors is an integer number (58011978).

Almost surely, 2230012291 is an apocalyptic number.

230012291 is a deficient number, since it is larger than the sum of its proper divisors (2035621).

230012291 is a wasteful number, since it uses less digits than its factorization.

230012291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035620.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 230012291 is about 15166.1561049595. The cubic root of 230012291 is about 612.7034812478.

The spelling of 230012291 in words is "two hundred thirty million, twelve thousand, two hundred ninety-one".

Divisors: 1 113 2035507 230012291