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23330123231 = 106572189183
BaseRepresentation
bin10101101110100101…
…010110110111011111
32020012220202001112012
4111232211112313133
5340240002420411
614415005301435
71454066526662
oct255645266737
966186661465
1023330123231
119992278988
12463126487b
13227a5a605c
1411b46a36d9
159182be18b
hex56e956ddf

23330123231 has 4 divisors (see below), whose sum is σ = 23332323072. Its totient is φ = 23327923392.

The previous prime is 23330123191. The next prime is 23330123233. The reversal of 23330123231 is 13232103332.

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 23330123231 - 226 = 23263014367 is a prime.

It is a super-2 number, since 2×233301232312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23330123197 and 23330123206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23330123233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1083935 + ... + 1105248.

It is an arithmetic number, because the mean of its divisors is an integer number (5833080768).

Almost surely, 223330123231 is an apocalyptic number.

23330123231 is a deficient number, since it is larger than the sum of its proper divisors (2199841).

23330123231 is a wasteful number, since it uses less digits than its factorization.

23330123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199840.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 23330123231 its reverse (13232103332), we get a palindrome (36562226563).

The spelling of 23330123231 in words is "twenty-three billion, three hundred thirty million, one hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 10657 2189183 23330123231