Base | Representation |
---|---|
bin | 10010110101111000… |
… | …011001100101010011 |
3 | 1221012221211001112101 |
4 | 102311320121211103 |
5 | 312413210031011 |
6 | 13143311341231 |
7 | 1314231316525 |
oct | 226570314523 |
9 | 57187731471 |
10 | 20231330131 |
11 | 8642070851 |
12 | 3b07521817 |
13 | 1ba55b147c |
14 | d9cd01a15 |
15 | 7d62132c1 |
hex | 4b5e19953 |
20231330131 has 8 divisors (see below), whose sum is σ = 22548851280. Its totient is φ = 18039080448.
The previous prime is 20231330101. The next prime is 20231330201. The reversal of 20231330131 is 13103313202.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20231330131 - 29 = 20231329619 is a prime.
It is a super-3 number, since 3×202313301313 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Harshad number since it is a multiple of its sum of digits (19).
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 20231330099 and 20231330108.
It is not an unprimeable number, because it can be changed into a prime (20231330101) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31317526 + ... + 31318171.
It is an arithmetic number, because the mean of its divisors is an integer number (2818606410).
Almost surely, 220231330131 is an apocalyptic number.
20231330131 is a deficient number, since it is larger than the sum of its proper divisors (2317521149).
20231330131 is a wasteful number, since it uses less digits than its factorization.
20231330131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 62635733.
The product of its (nonzero) digits is 324, while the sum is 19.
Adding to 20231330131 its reverse (13103313202), we get a palindrome (33334643333).
The spelling of 20231330131 in words is "twenty billion, two hundred thirty-one million, three hundred thirty thousand, one hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.081 sec. • engine limits •