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23214231 = 3217712137
BaseRepresentation
bin101100010001…
…1100010010111
31121200101221100
41120203202113
521420323411
62145321143
7401213655
oct130434227
947611840
1023214231
1112116217
1279361b3
134a6a441
143123dd5
152088456
hex1623897

23214231 has 24 divisors (see below), whose sum is σ = 36021024. Its totient is φ = 14353920.

The previous prime is 23214223. The next prime is 23214259. The reversal of 23214231 is 13241232.

It is not a de Polignac number, because 23214231 - 23 = 23214223 is a prime.

It is a super-2 number, since 2×232142312 = 1077801041842722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23214211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9795 + ... + 11931.

It is an arithmetic number, because the mean of its divisors is an integer number (1500876).

Almost surely, 223214231 is an apocalyptic number.

23214231 is a deficient number, since it is larger than the sum of its proper divisors (12806793).

23214231 is a wasteful number, since it uses less digits than its factorization.

23214231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231 (or 2228 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 23214231 is about 4818.1148803240. The cubic root of 23214231 is about 285.2669336582.

Adding to 23214231 its reverse (13241232), we get a palindrome (36455463).

The spelling of 23214231 in words is "twenty-three million, two hundred fourteen thousand, two hundred thirty-one".

Divisors: 1 3 9 17 51 71 153 213 639 1207 2137 3621 6411 10863 19233 36329 108987 151727 326961 455181 1365543 2579359 7738077 23214231