Base | Representation |
---|---|
bin | 111100110100001… |
… | …011101000101111 |
3 | 2122002220020002110 |
4 | 330310023220233 |
5 | 4042144441421 |
6 | 245124455103 |
7 | 34166336610 |
oct | 7464135057 |
9 | 2562806073 |
10 | 1020312111 |
11 | 483a37655 |
12 | 24584a493 |
13 | 1334cc6a0 |
14 | 99717c07 |
15 | 5e894a76 |
hex | 3cd0ba2f |
1020312111 has 64 divisors (see below), whose sum is σ = 1741759488. Its totient is φ = 516907008.
The previous prime is 1020312091. The next prime is 1020312149. The reversal of 1020312111 is 1112130201.
It is not a de Polignac number, because 1020312111 - 217 = 1020181039 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1020312151) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 837775 + ... + 838991.
It is an arithmetic number, because the mean of its divisors is an integer number (27214992).
Almost surely, 21020312111 is an apocalyptic number.
1020312111 is a deficient number, since it is larger than the sum of its proper divisors (721447377).
1020312111 is a wasteful number, since it uses less digits than its factorization.
1020312111 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1360.
The product of its (nonzero) digits is 12, while the sum is 12.
The square root of 1020312111 is about 31942.3247588525. The cubic root of 1020312111 is about 1006.7253716453.
Adding to 1020312111 its reverse (1112130201), we get a palindrome (2132442312).
The spelling of 1020312111 in words is "one billion, twenty million, three hundred twelve thousand, one hundred eleven".
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