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23150213 = 231006531
BaseRepresentation
bin101100001001…
…1111010000101
31121120011010022
41120103322011
521411301323
62144104525
7400526222
oct130237205
947504108
1023150213
1112082109
127905145
134a47268
143108949
1520744c8
hex1613e85

23150213 has 4 divisors (see below), whose sum is σ = 24156768. Its totient is φ = 22143660.

The previous prime is 23150201. The next prime is 23150233. The reversal of 23150213 is 31205132.

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 23150213 - 28 = 23149957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23150191 and 23150200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23150233) 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, 503243 + ... + 503288.

It is an arithmetic number, because the mean of its divisors is an integer number (6039192).

Almost surely, 223150213 is an apocalyptic number.

23150213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23150213 is a deficient number, since it is larger than the sum of its proper divisors (1006555).

23150213 is a wasteful number, since it uses less digits than its factorization.

23150213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006554.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 23150213 is about 4811.4668241608. The cubic root of 23150213 is about 285.0044648936.

Adding to 23150213 its reverse (31205132), we get a palindrome (54355345).

The spelling of 23150213 in words is "twenty-three million, one hundred fifty thousand, two hundred thirteen".

Divisors: 1 23 1006531 23150213