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31223030241 = 3137243110533
BaseRepresentation
bin11101000101000010…
…011010000111100001
32222120222122021110110
4131011002122013201
51002421043431431
622202121521533
72153510243454
oct350502320741
988528567413
1031223030241
111227264a827
1260746432a9
132c37891030
141722a5149b
15c2b1b3346
hex74509a1e1

31223030241 has 16 divisors (see below), whose sum is σ = 44839664576. Its totient is φ = 19211345856.

The previous prime is 31223030233. The next prime is 31223030257. The reversal of 31223030241 is 14203032213.

It is not a de Polignac number, because 31223030241 - 23 = 31223030233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223030281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227211 + ... + 337743.

It is an arithmetic number, because the mean of its divisors is an integer number (2802479036).

Almost surely, 231223030241 is an apocalyptic number.

It is an amenable number.

31223030241 is a deficient number, since it is larger than the sum of its proper divisors (13616634335).

31223030241 is a wasteful number, since it uses less digits than its factorization.

31223030241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117792.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31223030241 its reverse (14203032213), we get a palindrome (45426062454).

The spelling of 31223030241 in words is "thirty-one billion, two hundred twenty-three million, thirty thousand, two hundred forty-one".

Divisors: 1 3 13 39 7243 21729 94159 110533 282477 331599 1436929 4310787 800590519 2401771557 10407676747 31223030241