Base | Representation |
---|---|
bin | 111011011010… |
… | …1100001001111 |
3 | 2011121200210110 |
4 | 1312311201033 |
5 | 30433332312 |
6 | 3031411103 |
7 | 525534522 |
oct | 166654117 |
9 | 64550713 |
10 | 31152207 |
11 | 16648129 |
12 | a523a93 |
13 | 65b9578 |
14 | 41ccbb9 |
15 | 2b0543c |
hex | 1db584f |
31152207 has 4 divisors (see below), whose sum is σ = 41536280. Its totient is φ = 20768136.
The previous prime is 31152161. The next prime is 31152217. The reversal of 31152207 is 70225113.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 31152207 - 218 = 30890063 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31152217) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5192032 + ... + 5192037.
It is an arithmetic number, because the mean of its divisors is an integer number (10384070).
Almost surely, 231152207 is an apocalyptic number.
31152207 is a deficient number, since it is larger than the sum of its proper divisors (10384073).
31152207 is a wasteful number, since it uses less digits than its factorization.
31152207 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10384072.
The product of its (nonzero) digits is 420, while the sum is 21.
The square root of 31152207 is about 5581.4162181296. The cubic root of 31152207 is about 314.6513552520.
The spelling of 31152207 in words is "thirty-one million, one hundred fifty-two thousand, two hundred seven".
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