Base | Representation |
---|---|
bin | 11100101011101010… |
… | …110110110101101111 |
3 | 2221111022210100020120 |
4 | 130223222312311233 |
5 | 1001033120113111 |
6 | 22051555420023 |
7 | 2140121542041 |
oct | 345352666557 |
9 | 87438710216 |
10 | 30797426031 |
11 | 12074387009 |
12 | 5b75bb4613 |
13 | 2b9a656518 |
14 | 16c2303a91 |
15 | c03b43406 |
hex | 72bab6d6f |
30797426031 has 8 divisors (see below), whose sum is σ = 41067654144. Its totient is φ = 20529407640.
The previous prime is 30797425957. The next prime is 30797426039. The reversal of 30797426031 is 13062479703.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30797426031 - 213 = 30797417839 is a prime.
It is a super-2 number, since 2×307974260312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30797426039) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519631 + ... + 575856.
It is an arithmetic number, because the mean of its divisors is an integer number (5133456768).
Almost surely, 230797426031 is an apocalyptic number.
30797426031 is a deficient number, since it is larger than the sum of its proper divisors (10270228113).
30797426031 is a wasteful number, since it uses less digits than its factorization.
30797426031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1104861.
The product of its (nonzero) digits is 190512, while the sum is 42.
The spelling of 30797426031 in words is "thirty billion, seven hundred ninety-seven million, four hundred twenty-six thousand, thirty-one".
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