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23210011231 = 112110001021
BaseRepresentation
bin10101100111011011…
…001010101001011111
32012220112201201211121
4111213123022221133
5340013230324411
614355035031411
71451110561141
oct254733125137
965815651747
1023210011231
11993049aa70
1245b8b9b567
13225b740174
1411a2758c91
1590c995571
hex5676caa5f

23210011231 has 4 divisors (see below), whose sum is σ = 25320012264. Its totient is φ = 21100010200.

The previous prime is 23210011213. The next prime is 23210011249. The reversal of 23210011231 is 13211001232.

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

It is an interprime number because it is at equal distance from previous prime (23210011213) and next prime (23210011249).

It is a cyclic number.

It is not a de Polignac number, because 23210011231 - 25 = 23210011199 is a prime.

It is a super-2 number, since 2×232100112312 (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 (23210011211) 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, 1055000500 + ... + 1055000521.

It is an arithmetic number, because the mean of its divisors is an integer number (6330003066).

Almost surely, 223210011231 is an apocalyptic number.

23210011231 is a deficient number, since it is larger than the sum of its proper divisors (2110001033).

23210011231 is a wasteful number, since it uses less digits than its factorization.

23210011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110001032.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23210011231 its reverse (13211001232), we get a palindrome (36421012463).

Subtracting from 23210011231 its reverse (13211001232), we obtain a palindrome (9999009999).

It can be divided in two parts, 2321001 and 1231, that added together give a palindrome (2322232).

The spelling of 23210011231 in words is "twenty-three billion, two hundred ten million, eleven thousand, two hundred thirty-one".

Divisors: 1 11 2110001021 23210011231