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3087315481 = 17181606793
BaseRepresentation
bin1011100000000100…
…1011001000011001
321222011022212122211
42320001023020121
522310323043411
61230203515121
7136335514525
oct27001131031
97864285584
103087315481
1113447888a8
12721b28aa1
133a28065c3
14214054d85
15131090221
hexb804b219

3087315481 has 4 divisors (see below), whose sum is σ = 3268922292. Its totient is φ = 2905708672.

The previous prime is 3087315467. The next prime is 3087315487. The reversal of 3087315481 is 1845137803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2064339225 + 1022976256 = 45435^2 + 31984^2 .

It is a cyclic number.

It is not a de Polignac number, because 3087315481 - 25 = 3087315449 is a prime.

It is a super-2 number, since 2×30873154812 = 19063033758444522722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3087315487) 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, 90803380 + ... + 90803413.

It is an arithmetic number, because the mean of its divisors is an integer number (817230573).

Almost surely, 23087315481 is an apocalyptic number.

It is an amenable number.

3087315481 is a deficient number, since it is larger than the sum of its proper divisors (181606811).

3087315481 is a wasteful number, since it uses less digits than its factorization.

3087315481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181606810.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 3087315481 is about 55563.6165219652. The cubic root of 3087315481 is about 1456.1082758772.

The spelling of 3087315481 in words is "three billion, eighty-seven million, three hundred fifteen thousand, four hundred eighty-one".

Divisors: 1 17 181606793 3087315481