Base | Representation |
---|---|
bin | 11100001101010000… |
… | …100101011010011111 |
3 | 2220011202202022110221 |
4 | 130031100211122133 |
5 | 444012012104211 |
6 | 21525212142211 |
7 | 2121355100014 |
oct | 341520453237 |
9 | 86152668427 |
10 | 30287222431 |
11 | 11932390544 |
12 | 5a53167967 |
13 | 2b18a3acbb |
14 | 167465370b |
15 | bc3e61c71 |
hex | 70d42569f |
30287222431 has 8 divisors (see below), whose sum is σ = 30894733584. Its totient is φ = 29681046720.
The previous prime is 30287222429. The next prime is 30287222461. The reversal of 30287222431 is 13422278203.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30287222431 - 21 = 30287222429 is a prime.
It is a super-2 number, since 2×302872224312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30287222461) 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, 287985 + ... + 378826.
It is an arithmetic number, because the mean of its divisors is an integer number (3861841698).
Almost surely, 230287222431 is an apocalyptic number.
30287222431 is a deficient number, since it is larger than the sum of its proper divisors (607511153).
30287222431 is an equidigital number, since it uses as much as digits as its factorization.
30287222431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 667721.
The product of its (nonzero) digits is 32256, while the sum is 34.
The spelling of 30287222431 in words is "thirty billion, two hundred eighty-seven million, two hundred twenty-two thousand, four hundred thirty-one".
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