Base | Representation |
---|---|
bin | 11100111010101110… |
… | …111001001010001001 |
3 | 2222010221022122212001 |
4 | 130322232321022021 |
5 | 1002042314023340 |
6 | 22133024151001 |
7 | 2146310566225 |
oct | 347256711211 |
9 | 88127278761 |
10 | 31050142345 |
11 | 12193aa5572 |
12 | 6026768461 |
13 | 2c0ab0a3c1 |
14 | 1707ac9785 |
15 | c1ae1229a |
hex | 73abb9289 |
31050142345 has 32 divisors (see below), whose sum is σ = 39436379136. Its totient is φ = 23430988800.
The previous prime is 31050142339. The next prime is 31050142349. The reversal of 31050142345 is 54324105013.
It is not a de Polignac number, because 31050142345 - 225 = 31016587913 is a prime.
It is a super-2 number, since 2×310501423452 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (31050142349) 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 31 ways as a sum of consecutive naturals, for example, 11863477 + ... + 11866093.
It is an arithmetic number, because the mean of its divisors is an integer number (1232386848).
Almost surely, 231050142345 is an apocalyptic number.
It is an amenable number.
31050142345 is a deficient number, since it is larger than the sum of its proper divisors (8386236791).
31050142345 is a wasteful number, since it uses less digits than its factorization.
31050142345 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4561.
The product of its (nonzero) digits is 7200, while the sum is 28.
Adding to 31050142345 its reverse (54324105013), we get a palindrome (85374247358).
The spelling of 31050142345 in words is "thirty-one billion, fifty million, one hundred forty-two thousand, three hundred forty-five".
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