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3188081 = 131271931
BaseRepresentation
bin1100001010010101110001
312222222020002
430022111301
51304004311
6152155345
736045461
oct14122561
95888202
103188081
111888286
121098b55
13878150
145cdba1
1542e93b
hex30a571

3188081 has 8 divisors (see below), whose sum is σ = 3462144. Its totient is φ = 2918160.

The previous prime is 3188077. The next prime is 3188083. The reversal of 3188081 is 1808813.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3188081 - 22 = 3188077 is a prime.

It is a super-2 number, since 2×31880812 = 20327720925122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3188083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (432768).

Almost surely, 23188081 is an apocalyptic number.

It is an amenable number.

3188081 is a deficient number, since it is larger than the sum of its proper divisors (274063).

3188081 is a wasteful number, since it uses less digits than its factorization.

3188081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 3188081 is about 1785.5198122676. The cubic root of 3188081 is about 147.1780741060.

The spelling of 3188081 in words is "three million, one hundred eighty-eight thousand, eighty-one".

Divisors: 1 13 127 1651 1931 25103 245237 3188081