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23200331231 = 7118917918913
BaseRepresentation
bin10101100110110110…
…001111010111011111
32012212212111221101002
4111212312033113133
5340003241044411
614354051340515
71450632363440
oct254666172737
965785457332
1023200331231
119925a89270
1245b58b173b
13225973115c
1411a13592c7
1590bbd233b
hex566d8f5df

23200331231 has 32 divisors (see below), whose sum is σ = 29415052800. Its totient is φ = 17774254080.

The previous prime is 23200331207. The next prime is 23200331249. The reversal of 23200331231 is 13213300232.

It is not a de Polignac number, because 23200331231 - 234 = 6020462047 is a prime.

It is a super-2 number, since 2×232003312312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23200331251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1217231 + ... + 1236143.

It is an arithmetic number, because the mean of its divisors is an integer number (919220400).

Almost surely, 223200331231 is an apocalyptic number.

23200331231 is a deficient number, since it is larger than the sum of its proper divisors (6214721569).

23200331231 is a wasteful number, since it uses less digits than its factorization.

23200331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19199.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23200331231 its reverse (13213300232), we get a palindrome (36413631463).

The spelling of 23200331231 in words is "twenty-three billion, two hundred million, three hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 7 11 77 89 179 623 979 1253 1969 6853 13783 15931 18913 111517 132391 175241 208043 1226687 1456301 1683257 3385427 11782799 18515827 23697989 37239697 129610789 260677879 301303003 2109121021 3314333033 23200331231