Base | Representation |
---|---|
bin | 11100011010000001… |
… | …101010100001110111 |
3 | 2220201200210102111012 |
4 | 130122001222201313 |
5 | 444431330240111 |
6 | 22002343102435 |
7 | 2126565515153 |
oct | 343201524167 |
9 | 86650712435 |
10 | 30501415031 |
11 | 11a3228761a |
12 | 5ab2a41a1b |
13 | 2b51224299 |
14 | 1694c8c063 |
15 | bd7b7148b |
hex | 71a06a877 |
30501415031 has 4 divisors (see below), whose sum is σ = 30522701472. Its totient is φ = 30480128592.
The previous prime is 30501415001. The next prime is 30501415039. The reversal of 30501415031 is 13051410503.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13051410503 = 2767 ⋅4716809.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30501415031 is a prime.
It is a super-2 number, since 2×305014150312 (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 = 30501414988 and 30501415006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30501415039) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10641071 + ... + 10643936.
It is an arithmetic number, because the mean of its divisors is an integer number (7630675368).
Almost surely, 230501415031 is an apocalyptic number.
30501415031 is a deficient number, since it is larger than the sum of its proper divisors (21286441).
30501415031 is a wasteful number, since it uses less digits than its factorization.
30501415031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 21286440.
The product of its (nonzero) digits is 900, while the sum is 23.
Adding to 30501415031 its reverse (13051410503), we get a palindrome (43552825534).
The spelling of 30501415031 in words is "thirty billion, five hundred one million, four hundred fifteen thousand, thirty-one".
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