Base | Representation |
---|---|
bin | 11100010111001010… |
… | …001100111011010111 |
3 | 2220121100022000110202 |
4 | 130113022030323113 |
5 | 444332022241211 |
6 | 21553504211115 |
7 | 2125442650451 |
oct | 342712147327 |
9 | 86540260422 |
10 | 30453321431 |
11 | 11a08119145 |
12 | 5a9a909a9b |
13 | 2b44285830 |
14 | 168c72d2d1 |
15 | bd382153b |
hex | 71728ced7 |
30453321431 has 8 divisors (see below), whose sum is σ = 32799789120. Its totient is φ = 28107411552.
The previous prime is 30453321413. The next prime is 30453321449. The reversal of 30453321431 is 13412335403.
It is an interprime number because it is at equal distance from previous prime (30453321413) and next prime (30453321449).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30453321431 is a prime.
It is a super-2 number, since 2×304533214312 (a number of 22 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 = 30453321394 and 30453321403.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30453320431) 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, 22415 + ... + 247808.
It is an arithmetic number, because the mean of its divisors is an integer number (4099973640).
Almost surely, 230453321431 is an apocalyptic number.
30453321431 is a deficient number, since it is larger than the sum of its proper divisors (2346467689).
30453321431 is a wasteful number, since it uses less digits than its factorization.
30453321431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 278905.
The product of its (nonzero) digits is 12960, while the sum is 29.
Adding to 30453321431 its reverse (13412335403), we get a palindrome (43865656834).
The spelling of 30453321431 in words is "thirty billion, four hundred fifty-three million, three hundred twenty-one thousand, four hundred thirty-one".
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