Base | Representation |
---|---|
bin | 11100011100011010… |
… | …011000111111011111 |
3 | 2220211111010110211102 |
4 | 130130122120333133 |
5 | 1000022102414411 |
6 | 22010333143315 |
7 | 2130563023604 |
oct | 343432307737 |
9 | 86744113742 |
10 | 30541451231 |
11 | 11a52942395 |
12 | 5b0432ab3b |
13 | 2b59601445 |
14 | 169a3106ab |
15 | bdb42dd3b |
hex | 71c698fdf |
30541451231 has 4 divisors (see below), whose sum is σ = 30543039264. Its totient is φ = 30539863200.
The previous prime is 30541451207. The next prime is 30541451249. The reversal of 30541451231 is 13215414503.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 30541451231 - 210 = 30541450207 is a prime.
It is a super-2 number, since 2×305414512312 (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 = 30541451194 and 30541451203.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30541481231) 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, 764810 + ... + 803751.
It is an arithmetic number, because the mean of its divisors is an integer number (7635759816).
Almost surely, 230541451231 is an apocalyptic number.
30541451231 is a deficient number, since it is larger than the sum of its proper divisors (1588033).
30541451231 is a wasteful number, since it uses less digits than its factorization.
30541451231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1588032.
The product of its (nonzero) digits is 7200, while the sum is 29.
Adding to 30541451231 its reverse (13215414503), we get a palindrome (43756865734).
The spelling of 30541451231 in words is "thirty billion, five hundred forty-one million, four hundred fifty-one thousand, two hundred thirty-one".
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