Base | Representation |
---|---|
bin | 1111101011000… |
… | …11110010000111 |
3 | 100011101220121222 |
4 | 13311203302013 |
5 | 232124340321 |
6 | 21014030555 |
7 | 3154365455 |
oct | 765436207 |
9 | 304356558 |
10 | 131480711 |
11 | 6824344a |
12 | 3804845b |
13 | 2131674b |
14 | 136679d5 |
15 | b8223ab |
hex | 7d63c87 |
131480711 has 4 divisors (see below), whose sum is σ = 133332624. Its totient is φ = 129628800.
The previous prime is 131480707. The next prime is 131480731. The reversal of 131480711 is 117084131.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 117084131 = 233 ⋅502507.
It is a cyclic number.
It is not a de Polignac number, because 131480711 - 22 = 131480707 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 (131480731) 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, 925850 + ... + 925991.
It is an arithmetic number, because the mean of its divisors is an integer number (33333156).
Almost surely, 2131480711 is an apocalyptic number.
131480711 is a deficient number, since it is larger than the sum of its proper divisors (1851913).
131480711 is an equidigital number, since it uses as much as digits as its factorization.
131480711 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1851912.
The product of its (nonzero) digits is 672, while the sum is 26.
The square root of 131480711 is about 11466.5038699684. The cubic root of 131480711 is about 508.4957740345.
The spelling of 131480711 in words is "one hundred thirty-one million, four hundred eighty thousand, seven hundred eleven".
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