Base | Representation |
---|---|
bin | 111111111111100… |
… | …0101111111001111 |
3 | 12112122102101210210 |
4 | 1333333011333033 |
5 | 13344143333111 |
6 | 553022533503 |
7 | 104132201340 |
oct | 17777057717 |
9 | 5478371723 |
10 | 2147246031 |
11 | a020787a7 |
12 | 4bb137293 |
13 | 282b208a8 |
14 | 1652680c7 |
15 | c879b0a6 |
hex | 7ffc5fcf |
2147246031 has 32 divisors (see below), whose sum is σ = 3555328000. Its totient is φ = 1124915040.
The previous prime is 2147246009. The next prime is 2147246041. The reversal of 2147246031 is 1306427412.
It is not a de Polignac number, because 2147246031 - 25 = 2147245999 is a prime.
It is a super-2 number, since 2×21472460312 = 9221331035290505922, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 2147246031.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2147246041) 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, 74431 + ... + 99168.
It is an arithmetic number, because the mean of its divisors is an integer number (111104000).
Almost surely, 22147246031 is an apocalyptic number.
2147246031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
2147246031 is a deficient number, since it is larger than the sum of its proper divisors (1408081969).
2147246031 is a wasteful number, since it uses less digits than its factorization.
2147246031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 173659.
The product of its (nonzero) digits is 8064, while the sum is 30.
The square root of 2147246031 is about 46338.3861501455. The cubic root of 2147246031 is about 1290.1115683807. Note that the first 3 decimals are identical.
The spelling of 2147246031 in words is "two billion, one hundred forty-seven million, two hundred forty-six thousand, thirty-one".
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