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3131200141 = 28111143061
BaseRepresentation
bin1011101010100010…
…0101001010001101
322002012220110002121
42322220211022031
522403041401031
61234412252541
7140410522246
oct27250451215
98065813077
103131200141
111367532013
12734771151
133ab930364
14219bd9ccd
15134d5d011
hexbaa2528d

3131200141 has 4 divisors (see below), whose sum is σ = 3142343484. Its totient is φ = 3120056800.

The previous prime is 3131200139. The next prime is 3131200153. The reversal of 3131200141 is 1410021313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1410021313 = 1817790173.

It can be written as a sum of positive squares in 2 ways, for example, as 746928900 + 2384271241 = 27330^2 + 48829^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131200141 - 21 = 3131200139 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 (3131207141) 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, 5571250 + ... + 5571811.

It is an arithmetic number, because the mean of its divisors is an integer number (785585871).

Almost surely, 23131200141 is an apocalyptic number.

It is an amenable number.

3131200141 is a deficient number, since it is larger than the sum of its proper divisors (11143343).

3131200141 is a wasteful number, since it uses less digits than its factorization.

3131200141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11143342.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3131200141 is about 55957.1277050565. The cubic root of 3131200141 is about 1462.9751275418.

Adding to 3131200141 its reverse (1410021313), we get a palindrome (4541221454).

The spelling of 3131200141 in words is "three billion, one hundred thirty-one million, two hundred thousand, one hundred forty-one".

Divisors: 1 281 11143061 3131200141