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231327223 = 1912175117
BaseRepresentation
bin11011100100111…
…00010111110111
3121010021122021221
431302130113313
5433204432343
634542051211
75506151251
oct1562342767
9533248257
10231327223
1110963a626
1265579b07
1338c0541a
1422a18cd1
15154965ed
hexdc9c5f7

231327223 has 4 divisors (see below), whose sum is σ = 243502360. Its totient is φ = 219152088.

The previous prime is 231327193. The next prime is 231327241. The reversal of 231327223 is 322723132.

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-231327223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231327623) 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, 6087540 + ... + 6087577.

It is an arithmetic number, because the mean of its divisors is an integer number (60875590).

Almost surely, 2231327223 is an apocalyptic number.

231327223 is a deficient number, since it is larger than the sum of its proper divisors (12175137).

231327223 is a wasteful number, since it uses less digits than its factorization.

231327223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12175136.

The product of its digits is 3024, while the sum is 25.

The square root of 231327223 is about 15209.4451904072. The cubic root of 231327223 is about 613.8688291204.

The spelling of 231327223 in words is "two hundred thirty-one million, three hundred twenty-seven thousand, two hundred twenty-three".

Divisors: 1 19 12175117 231327223