Search a number
-
+
23103430321 = 172311758789
BaseRepresentation
bin10101100001000100…
…100101111010110001
32012122010011212022111
4111201010211322301
5334303434232241
614340310405321
71445344626466
oct254104457261
965563155274
1023103430321
119886314174
124589360841
13224263413a
14119253366d
15903440c81
hex561125eb1

23103430321 has 8 divisors (see below), whose sum is σ = 24463929960. Its totient is φ = 21743094528.

The previous prime is 23103430307. The next prime is 23103430327. The reversal of 23103430321 is 12303430132.

It can be written as a sum of positive squares in 4 ways, for example, as 5164578225 + 17938852096 = 71865^2 + 133936^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23103430321 - 213 = 23103422129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23103430292 and 23103430301.

It is not an unprimeable number, because it can be changed into a prime (23103430327) 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, 363595 + ... + 422383.

It is an arithmetic number, because the mean of its divisors is an integer number (3057991245).

Almost surely, 223103430321 is an apocalyptic number.

It is an amenable number.

23103430321 is a deficient number, since it is larger than the sum of its proper divisors (1360499639).

23103430321 is a wasteful number, since it uses less digits than its factorization.

23103430321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81923.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 23103430321 its reverse (12303430132), we get a palindrome (35406860453).

The spelling of 23103430321 in words is "twenty-three billion, one hundred three million, four hundred thirty thousand, three hundred twenty-one".

Divisors: 1 17 23117 58789 392989 999413 1359025313 23103430321