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31321312032331 is a prime number
BaseRepresentation
bin1110001111100100011111…
…01011010111011001001011
311002220021210002101121222001
413013302033223113121023
513101132021340013311
6150340451225411431
76411614211350626
oct707621753273113
9132807702347861
1031321312032331
119a86326108602
12361a344039b77
13146278299cbb9
147a3d61190dbd
15394b14c354c1
hex1c7c8fad764b

31321312032331 has 2 divisors, whose sum is σ = 31321312032332. Its totient is φ = 31321312032330.

The previous prime is 31321312032323. The next prime is 31321312032407. The reversal of 31321312032331 is 13323021312313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31321312032331 - 23 = 31321312032323 is a prime.

It is a super-2 number, since 2×313213120323312 (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31321312032331.

It is not a weakly prime, because it can be changed into another prime (31321312032631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660656016165 + 15660656016166.

It is an arithmetic number, because the mean of its divisors is an integer number (15660656016166).

Almost surely, 231321312032331 is an apocalyptic number.

31321312032331 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321312032331 is an equidigital number, since it uses as much as digits as its factorization.

31321312032331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31321312032331 its reverse (13323021312313), we get a palindrome (44644333344644).

The spelling of 31321312032331 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred twelve million, thirty-two thousand, three hundred thirty-one".