Base | Representation |
---|---|
bin | 100100000100010… |
… | …1100110000011111 |
3 | 10010100021120012212 |
4 | 1020020230300133 |
5 | 4434310140111 |
6 | 320031351035 |
7 | 41663604410 |
oct | 11010546037 |
9 | 3110246185 |
10 | 1210240031 |
11 | 571170280 |
12 | 29938247b |
13 | 16396b380 |
14 | b6a37807 |
15 | 713ae98b |
hex | 4822cc1f |
1210240031 has 64 divisors (see below), whose sum is σ = 1718255616. Its totient is φ = 821923200.
The previous prime is 1210240021. The next prime is 1210240033. The reversal of 1210240031 is 1300420121.
It is not a de Polignac number, because 1210240031 - 226 = 1143131167 is a prime.
It is a super-2 number, since 2×12102400312 = 2929361865269761922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1210239988 and 1210240015.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1210240033) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1333880 + ... + 1334786.
It is an arithmetic number, because the mean of its divisors is an integer number (26847744).
Almost surely, 21210240031 is an apocalyptic number.
1210240031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
1210240031 is a deficient number, since it is larger than the sum of its proper divisors (508015585).
1210240031 is a wasteful number, since it uses less digits than its factorization.
1210240031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1012.
The product of its (nonzero) digits is 48, while the sum is 14.
The square root of 1210240031 is about 34788.5042938037. The cubic root of 1210240031 is about 1065.6726942485.
Adding to 1210240031 its reverse (1300420121), we get a palindrome (2510660152).
The spelling of 1210240031 in words is "one billion, two hundred ten million, two hundred forty thousand, thirty-one".
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