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23013213 = 343178397
BaseRepresentation
bin101011111001…
…0011101011101
31121022012012020
41113302131131
521342410323
62141130353
7366415626
oct127623535
947265166
1023013213
1111a99193
1278599b9
1349c9ab2
1430b0a4d
152048ae3
hex15f275d

23013213 has 8 divisors (see below), whose sum is σ = 31398048. Its totient is φ = 14985264.

The previous prime is 23013209. The next prime is 23013233. The reversal of 23013213 is 31231032.

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

It is not a de Polignac number, because 23013213 - 22 = 23013209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23013192 and 23013201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013233) 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, 89070 + ... + 89327.

It is an arithmetic number, because the mean of its divisors is an integer number (3924756).

Almost surely, 223013213 is an apocalyptic number.

It is an amenable number.

23013213 is a deficient number, since it is larger than the sum of its proper divisors (8384835).

23013213 is a wasteful number, since it uses less digits than its factorization.

23013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178443.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 23013213 is about 4797.2088760028. The cubic root of 23013213 is about 284.4411455521.

Adding to 23013213 its reverse (31231032), we get a palindrome (54244245).

The spelling of 23013213 in words is "twenty-three million, thirteen thousand, two hundred thirteen".

Divisors: 1 3 43 129 178397 535191 7671071 23013213