Search a number
-
+
23130233231 = 73304319033
BaseRepresentation
bin10101100010101010…
…110101100110001111
32012200222121120222212
4111202222311212033
5334332314430411
614343105101035
71446121511210
oct254252654617
965628546885
1023130233231
11989a460636
12459632777b
132248059b51
141195d0d407
1590598768b
hex562ab598f

23130233231 has 4 divisors (see below), whose sum is σ = 26434552272. Its totient is φ = 19825914192.

The previous prime is 23130233227. The next prime is 23130233239. The reversal of 23130233231 is 13233203132.

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

It is not a de Polignac number, because 23130233231 - 22 = 23130233227 is a prime.

It is a super-2 number, since 2×231302332312 (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 = 23130233197 and 23130233206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130233239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1652159510 + ... + 1652159523.

It is an arithmetic number, because the mean of its divisors is an integer number (6608638068).

Almost surely, 223130233231 is an apocalyptic number.

23130233231 is a deficient number, since it is larger than the sum of its proper divisors (3304319041).

23130233231 is an equidigital number, since it uses as much as digits as its factorization.

23130233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304319040.

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

Adding to 23130233231 its reverse (13233203132), we get a palindrome (36363436363).

The spelling of 23130233231 in words is "twenty-three billion, one hundred thirty million, two hundred thirty-three thousand, two hundred thirty-one".

Divisors: 1 7 3304319033 23130233231