Base | Representation |
---|---|
bin | 11100001110100111… |
… | …101000101110000101 |
3 | 2220020100200200201201 |
4 | 130032213220232011 |
5 | 444033332330001 |
6 | 21531345222501 |
7 | 2122053052564 |
oct | 341647505605 |
9 | 86210620651 |
10 | 30310042501 |
11 | 11944257602 |
12 | 5a5a931a31 |
13 | 2b2069abbb |
14 | 16776b3bdb |
15 | bc5e6d501 |
hex | 70e9e8b85 |
30310042501 has 4 divisors (see below), whose sum is σ = 30311397504. Its totient is φ = 30308687500.
The previous prime is 30310042457. The next prime is 30310042591. The reversal of 30310042501 is 10524001303.
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: 10524001303 = 31 ⋅339483913.
It is a cyclic number.
It is not a de Polignac number, because 30310042501 - 233 = 21720107909 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 (30310042591) 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, 643375 + ... + 688876.
It is an arithmetic number, because the mean of its divisors is an integer number (7577849376).
Almost surely, 230310042501 is an apocalyptic number.
It is an amenable number.
30310042501 is a deficient number, since it is larger than the sum of its proper divisors (1355003).
30310042501 is a wasteful number, since it uses less digits than its factorization.
30310042501 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1355002.
The product of its (nonzero) digits is 360, while the sum is 19.
Adding to 30310042501 its reverse (10524001303), we get a palindrome (40834043804).
The spelling of 30310042501 in words is "thirty billion, three hundred ten million, forty-two thousand, five hundred one".
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