Base | Representation |
---|---|
bin | 1101011111010101110… |
… | …1101001010110011101 |
3 | 211011012011020210001002 |
4 | 3113311131221112131 |
5 | 12244111333044112 |
6 | 254244250000045 |
7 | 22513005606014 |
oct | 3276535512635 |
9 | 734164223032 |
10 | 231751456157 |
11 | 8a315723161 |
12 | 38ab9116025 |
13 | 18b14508960 |
14 | b306da7a7b |
15 | 6065c181c2 |
hex | 35f576959d |
231751456157 has 16 divisors (see below), whose sum is σ = 251492445120. Its totient is φ = 212285342592.
The previous prime is 231751456091. The next prime is 231751456169. The reversal of 231751456157 is 751654157132.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-231751456157 is a prime.
It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (231751486157) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3951713 + ... + 4009929.
It is an arithmetic number, because the mean of its divisors is an integer number (15718277820).
Almost surely, 2231751456157 is an apocalyptic number.
It is an amenable number.
231751456157 is a deficient number, since it is larger than the sum of its proper divisors (19740988963).
231751456157 is a wasteful number, since it uses less digits than its factorization.
231751456157 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 60572.
The product of its digits is 882000, while the sum is 47.
The spelling of 231751456157 in words is "two hundred thirty-one billion, seven hundred fifty-one million, four hundred fifty-six thousand, one hundred fifty-seven".
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