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23213201431 = 76749999901
BaseRepresentation
bin10101100111100111…
…010101100000010111
32012220202201210222011
4111213213111200113
5340020034421211
614355231245051
71451146646050
oct254747254027
965822653864
1023213201431
1199322798a2
1245ba079787
13225c2b9264
1411a2d49727
1590cdc5921
hex5679d5817

23213201431 has 16 divisors (see below), whose sum is σ = 26933440000. Its totient is φ = 19594159200.

The previous prime is 23213201413. The next prime is 23213201443. The reversal of 23213201431 is 13410231232.

It is not a de Polignac number, because 23213201431 - 213 = 23213193239 is a prime.

It is a super-2 number, since 2×232132014312 (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 (23213201731) 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 15 ways as a sum of consecutive naturals, for example, 2339581 + ... + 2349481.

It is an arithmetic number, because the mean of its divisors is an integer number (1683340000).

Almost surely, 223213201431 is an apocalyptic number.

23213201431 is a deficient number, since it is larger than the sum of its proper divisors (3720238569).

23213201431 is an equidigital number, since it uses as much as digits as its factorization.

23213201431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14974.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 23213201431 its reverse (13410231232), we get a palindrome (36623432663).

The spelling of 23213201431 in words is "twenty-three billion, two hundred thirteen million, two hundred one thousand, four hundred thirty-one".

Divisors: 1 7 67 469 4999 9901 34993 69307 334933 663367 2344531 4643569 49495099 346465693 3316171633 23213201431