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3161433061 = 18117466481
BaseRepresentation
bin1011110001101111…
…1010001111100101
322011022210102212101
42330123322033211
522433311324221
61241412252101
7141225511003
oct27433721745
98138712771
103161433061
1113826014a6
12742911031
133b4c87367
1421dc29a73
15137830d91
hexbc6fa3e5

3161433061 has 4 divisors (see below), whose sum is σ = 3178899724. Its totient is φ = 3143966400.

The previous prime is 3161433013. The next prime is 3161433071. The reversal of 3161433061 is 1603341613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1603341613 = 4139105893.

It can be written as a sum of positive squares in 2 ways, for example, as 533332836 + 2628100225 = 23094^2 + 51265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3161433061 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 (3161433071) 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, 8733060 + ... + 8733421.

It is an arithmetic number, because the mean of its divisors is an integer number (794724931).

Almost surely, 23161433061 is an apocalyptic number.

It is an amenable number.

3161433061 is a deficient number, since it is larger than the sum of its proper divisors (17466663).

3161433061 is a wasteful number, since it uses less digits than its factorization.

3161433061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17466662.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3161433061 is about 56226.6223509825. The cubic root of 3161433061 is about 1467.6685799175.

Adding to 3161433061 its reverse (1603341613), we get a palindrome (4764774674).

The spelling of 3161433061 in words is "three billion, one hundred sixty-one million, four hundred thirty-three thousand, sixty-one".

Divisors: 1 181 17466481 3161433061