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23030261 = 191212119
BaseRepresentation
bin101011111011…
…0100111110101
31121100001120122
41113312213311
521343432021
62141341325
7366516422
oct127664765
947301518
1023030261
1111aaaa81
127867845
134a04797
1430b6d49
15204dbab
hex15f69f5

23030261 has 4 divisors (see below), whose sum is σ = 24242400. Its totient is φ = 21818124.

The previous prime is 23030251. The next prime is 23030281. The reversal of 23030261 is 16203032.

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 23030261 - 26 = 23030197 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 (23030251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606041 + ... + 606078.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600).

Almost surely, 223030261 is an apocalyptic number.

It is an amenable number.

23030261 is a deficient number, since it is larger than the sum of its proper divisors (1212139).

23030261 is a wasteful number, since it uses less digits than its factorization.

23030261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212138.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 23030261 is about 4798.9854136057. The cubic root of 23030261 is about 284.5113654403.

Adding to 23030261 its reverse (16203032), we get a palindrome (39233293).

The spelling of 23030261 in words is "twenty-three million, thirty thousand, two hundred sixty-one".

Divisors: 1 19 1212119 23030261