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23203430245 = 526931355117
BaseRepresentation
bin10101100111000010…
…000011111101100101
32012220002100101102101
4111213002003331211
5340010034231440
614354242012101
71451000621452
oct254702037545
965802311371
1023203430245
119927805636
1245b6947031
13225a2778a8
1411a1924829
1590c0e569a
hex567083f65

23203430245 has 16 divisors (see below), whose sum is σ = 28037424240. Its totient is φ = 18434317824.

The previous prime is 23203430221. The next prime is 23203430273. The reversal of 23203430245 is 54203430232.

It can be written as a sum of positive squares in 8 ways, for example, as 3112635681 + 20090794564 = 55791^2 + 141742^2 .

It is a cyclic number.

It is not a de Polignac number, because 23203430245 - 25 = 23203430213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393427 + ... + 448543.

It is an arithmetic number, because the mean of its divisors is an integer number (1752339015).

Almost surely, 223203430245 is an apocalyptic number.

It is an amenable number.

23203430245 is a deficient number, since it is larger than the sum of its proper divisors (4833993995).

23203430245 is a wasteful number, since it uses less digits than its factorization.

23203430245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55704.

The product of its (nonzero) digits is 17280, while the sum is 28.

Adding to 23203430245 its reverse (54203430232), we get a palindrome (77406860477).

The spelling of 23203430245 in words is "twenty-three billion, two hundred three million, four hundred thirty thousand, two hundred forty-five".

Divisors: 1 5 269 313 1345 1565 55117 84197 275585 420985 14826473 17251621 74132365 86258105 4640686049 23203430245