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31222402041 = 3417916091997
BaseRepresentation
bin11101000101000000…
…000000101111111001
32222120221110100201210
4131011000000233321
51002420413331131
622202100233333
72153502016125
oct350500005771
988527410653
1031222402041
1112272260856
12607439b849
132c3770110c
14172292a585
15c2b0dc146
hex745000bf9

31222402041 has 32 divisors (see below), whose sum is σ = 43233523200. Its totient is φ = 20027704320.

The previous prime is 31222401971. The next prime is 31222402049. The reversal of 31222402041 is 14020422213.

It is not a de Polignac number, because 31222402041 - 233 = 22632467449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31222401999 and 31222402017.

It is not an unprimeable number, because it can be changed into a prime (31222402049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15633655 + ... + 15635651.

It is an arithmetic number, because the mean of its divisors is an integer number (1351047600).

Almost surely, 231222402041 is an apocalyptic number.

It is an amenable number.

31222402041 is a deficient number, since it is larger than the sum of its proper divisors (12011121159).

31222402041 is a wasteful number, since it uses less digits than its factorization.

31222402041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 31222402041 its reverse (14020422213), we get a palindrome (45242824254).

The spelling of 31222402041 in words is "thirty-one billion, two hundred twenty-two million, four hundred two thousand, forty-one".

Divisors: 1 3 41 79 123 237 1609 1997 3239 4827 5991 9717 65969 81877 127111 157763 197907 245631 381333 473289 3213173 5211551 6468283 9639519 15634653 19404849 131740093 253840667 395220279 761522001 10407467347 31222402041