Base | Representation |
---|---|
bin | 111100110110… |
… | …1001010010001 |
3 | 2020000220121111 |
4 | 1321231022101 |
5 | 31131420101 |
6 | 3055453321 |
7 | 535116514 |
oct | 171551221 |
9 | 66026544 |
10 | 31904401 |
11 | 17011281 |
12 | a827241 |
13 | 67c0a59 |
14 | 4346d7b |
15 | 2c03251 |
hex | 1e6d291 |
31904401 has 8 divisors (see below), whose sum is σ = 33635520. Its totient is φ = 30178512.
The previous prime is 31904377. The next prime is 31904407. The reversal of 31904401 is 10440913.
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 31904401 - 29 = 31903889 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (31904407) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22551 + ... + 23923.
It is an arithmetic number, because the mean of its divisors is an integer number (4204440).
Almost surely, 231904401 is an apocalyptic number.
It is an amenable number.
31904401 is a deficient number, since it is larger than the sum of its proper divisors (1731119).
31904401 is a wasteful number, since it uses less digits than its factorization.
31904401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2615.
The product of its (nonzero) digits is 432, while the sum is 22.
The square root of 31904401 is about 5648.3980914946. The cubic root of 31904401 is about 317.1637409675.
The spelling of 31904401 in words is "thirty-one million, nine hundred four thousand, four hundred one".
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