Base | Representation |
---|---|
bin | 10010110101111100… |
… | …000110010111111111 |
3 | 1221020000122022222121 |
4 | 102311330012113333 |
5 | 312413432100111 |
6 | 13143344223411 |
7 | 1314242466316 |
oct | 226574062777 |
9 | 57200568877 |
10 | 20232300031 |
11 | 8642673519 |
12 | 3b0790ab67 |
13 | 1ba5860a88 |
14 | d9d0b527d |
15 | 7d6355871 |
hex | 4b5f065ff |
20232300031 has 4 divisors (see below), whose sum is σ = 20232963000. Its totient is φ = 20231637064.
The previous prime is 20232300029. The next prime is 20232300041. The reversal of 20232300031 is 13000323202.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13000323202 = 2 ⋅6500161601.
It is a cyclic number.
It is not a de Polignac number, because 20232300031 - 21 = 20232300029 is a prime.
It is a super-2 number, since 2×202323000312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 20232299978 and 20232300014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20232300041) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283381 + ... + 347518.
It is an arithmetic number, because the mean of its divisors is an integer number (5058240750).
Almost surely, 220232300031 is an apocalyptic number.
20232300031 is a deficient number, since it is larger than the sum of its proper divisors (662969).
20232300031 is an equidigital number, since it uses as much as digits as its factorization.
20232300031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 662968.
The product of its (nonzero) digits is 216, while the sum is 16.
Adding to 20232300031 its reverse (13000323202), we get a palindrome (33232623233).
The spelling of 20232300031 in words is "twenty billion, two hundred thirty-two million, three hundred thousand, thirty-one".
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