Base | Representation |
---|---|
bin | 111111000010001… |
… | …1110111010101111 |
3 | 12110101221102211011 |
4 | 1332010132322233 |
5 | 13312431320211 |
6 | 545514010051 |
7 | 103262043136 |
oct | 17604367257 |
9 | 5411842734 |
10 | 2115104431 |
11 | 995a152a0 |
12 | 4b0416927 |
13 | 279278bab |
14 | 160c9c91d |
15 | c5a4c921 |
hex | 7e11eeaf |
2115104431 has 8 divisors (see below), whose sum is σ = 2307723264. Its totient is φ = 1922541720.
The previous prime is 2115104429. The next prime is 2115104477. The reversal of 2115104431 is 1344015112.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2115104431 - 21 = 2115104429 is a prime.
It is a super-2 number, since 2×21151044312 = 8947333508071667522, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2110104431) 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, 123090 + ... + 139216.
It is an arithmetic number, because the mean of its divisors is an integer number (288465408).
Almost surely, 22115104431 is an apocalyptic number.
2115104431 is a deficient number, since it is larger than the sum of its proper divisors (192618833).
2115104431 is a wasteful number, since it uses less digits than its factorization.
2115104431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28061.
The product of its (nonzero) digits is 480, while the sum is 22.
The square root of 2115104431 is about 45990.2645241360. The cubic root of 2115104431 is about 1283.6420586465.
Adding to 2115104431 its reverse (1344015112), we get a palindrome (3459119543).
The spelling of 2115104431 in words is "two billion, one hundred fifteen million, one hundred four thousand, four hundred thirty-one".
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