Base | Representation |
---|---|
bin | 11100001001111010… |
… | …001001101110100101 |
3 | 2220000211222102210221 |
4 | 130021322021232211 |
5 | 443403114311323 |
6 | 21515443244341 |
7 | 2120103230005 |
oct | 341172115645 |
9 | 86024872727 |
10 | 30231010213 |
11 | 11903687468 |
12 | 5a383796b1 |
13 | 2b0a1b9131 |
14 | 166adc0005 |
15 | bbe05b55d |
hex | 709e89ba5 |
30231010213 has 4 divisors (see below), whose sum is σ = 30231540288. Its totient is φ = 30230480140.
The previous prime is 30231010193. The next prime is 30231010231. The reversal of 30231010213 is 31201013203.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31201013203 = 29 ⋅1075897007.
It is a cyclic number.
It is not a de Polignac number, because 30231010213 - 29 = 30231009701 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30231010613) 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, 167533 + ... + 297538.
It is an arithmetic number, because the mean of its divisors is an integer number (7557885072).
Almost surely, 230231010213 is an apocalyptic number.
It is an amenable number.
30231010213 is a deficient number, since it is larger than the sum of its proper divisors (530075).
30231010213 is an equidigital number, since it uses as much as digits as its factorization.
30231010213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 530074.
The product of its (nonzero) digits is 108, while the sum is 16.
Adding to 30231010213 its reverse (31201013203), we get a palindrome (61432023416).
The spelling of 30231010213 in words is "thirty billion, two hundred thirty-one million, ten thousand, two hundred thirteen".
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