Search a number
-
+
63131080 = 2351578277
BaseRepresentation
bin1111000011010…
…0110111001000
311101210101120011
43300310313020
5112130143310
610133041304
71364414425
oct360646710
9141711504
1063131080
11326aa351
1219186234
131010518c
148554d4c
15582078a
hex3c34dc8

63131080 has 16 divisors (see below), whose sum is σ = 142045020. Its totient is φ = 25252416.

The previous prime is 63131071. The next prime is 63131099. The reversal of 63131080 is 8013136.

63131080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52620516 + 10510564 = 7254^2 + 3242^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 789099 + ... + 789178.

Almost surely, 263131080 is an apocalyptic number.

It is an amenable number.

63131080 is an abundant number, since it is smaller than the sum of its proper divisors (78913940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63131080 is a wasteful number, since it uses less digits than its factorization.

63131080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578288 (or 1578284 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 63131080 is about 7945.5069064220. The cubic root of 63131080 is about 398.1814951287.

The spelling of 63131080 in words is "sixty-three million, one hundred thirty-one thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 1578277 3156554 6313108 7891385 12626216 15782770 31565540 63131080