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23101223 = 231004401
BaseRepresentation
bin101100000011…
…1111100100111
31121110122220212
41120013330213
521403214343
62143050035
7400233335
oct130077447
947418825
1023101223
1112049322
1278a091b
134a2ab82
1430d4b55
152064c18
hex1607f27

23101223 has 4 divisors (see below), whose sum is σ = 24105648. Its totient is φ = 22096800.

The previous prime is 23101219. The next prime is 23101279. The reversal of 23101223 is 32210132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23101223 - 22 = 23101219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23101198 and 23101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23101213) 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, 502178 + ... + 502223.

It is an arithmetic number, because the mean of its divisors is an integer number (6026412).

Almost surely, 223101223 is an apocalyptic number.

23101223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23101223 is a deficient number, since it is larger than the sum of its proper divisors (1004425).

23101223 is a wasteful number, since it uses less digits than its factorization.

23101223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004424.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23101223 is about 4806.3731648718. The cubic root of 23101223 is about 284.8032827376.

Adding to 23101223 its reverse (32210132), we get a palindrome (55311355).

The spelling of 23101223 in words is "twenty-three million, one hundred one thousand, two hundred twenty-three".

Divisors: 1 23 1004401 23101223