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23110303231 = 191216331749
BaseRepresentation
bin10101100001011110…
…110011110111111111
32012122121010001011201
4111201132303313333
5334312214200411
614341114000331
71445460223231
oct254136636777
965577101151
1023110303231
11988a188964
12458b7160a7
132243b9c552
141193402251
15903d4c3c1
hex5617b3dff

23110303231 has 4 divisors (see below), whose sum is σ = 24326635000. Its totient is φ = 21893971464.

The previous prime is 23110303219. The next prime is 23110303289. The reversal of 23110303231 is 13230301132.

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 23110303231 - 25 = 23110303199 is a prime.

It is a super-2 number, since 2×231103032312 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1216331749 = 23110303231 / (2 + 3 + 1 + 1 + 0 + 3 + 0 + 3 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23110303199 and 23110303208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110300231) 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, 608165856 + ... + 608165893.

It is an arithmetic number, because the mean of its divisors is an integer number (6081658750).

Almost surely, 223110303231 is an apocalyptic number.

23110303231 is a deficient number, since it is larger than the sum of its proper divisors (1216331769).

23110303231 is a wasteful number, since it uses less digits than its factorization.

23110303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216331768.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23110303231 its reverse (13230301132), we get a palindrome (36340604363).

The spelling of 23110303231 in words is "twenty-three billion, one hundred ten million, three hundred three thousand, two hundred thirty-one".

Divisors: 1 19 1216331749 23110303231