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23110220231 = 77487440959
BaseRepresentation
bin10101100001011110…
…011111100111000111
32012122120221211022122
4111201132133213013
5334312204021411
614341112120155
71445456426240
oct254136374707
965576854278
1023110220231
11988a13156a
12458b69605b
132243b70837
1411933bdcc7
15903d329db
hex56179f9c7

23110220231 has 8 divisors (see below), whose sum is σ = 26415267840. Its totient is φ = 19806069528.

The previous prime is 23110220227. The next prime is 23110220249. The reversal of 23110220231 is 13202201132.

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

It is not a de Polignac number, because 23110220231 - 22 = 23110220227 is a prime.

It is a super-2 number, since 2×231102202312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110220281) 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, 168071 + ... + 272888.

It is an arithmetic number, because the mean of its divisors is an integer number (3301908480).

Almost surely, 223110220231 is an apocalyptic number.

23110220231 is a deficient number, since it is larger than the sum of its proper divisors (3305047609).

23110220231 is an equidigital number, since it uses as much as digits as its factorization.

23110220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448453.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23110220231 its reverse (13202201132), we get a palindrome (36312421363).

The spelling of 23110220231 in words is "twenty-three billion, one hundred ten million, two hundred twenty thousand, two hundred thirty-one".

Divisors: 1 7 7487 52409 440959 3086713 3301460033 23110220231