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200431131245 = 5241166332889
BaseRepresentation
bin1011101010101010100…
…0000101101001101101
3201011100101112102101022
42322222220011221231
511240440332144440
6232024330423525
720323604335262
oct2725250055155
9634311472338
10200431131245
117800316a514
1232a17b91ba5
1315b92740617
1499b546b269
155331236cb5
hex2eaaa05a6d

200431131245 has 8 divisors (see below), whose sum is σ = 241515356280. Its totient is φ = 159679572480.

The previous prime is 200431131139. The next prime is 200431131247. The reversal of 200431131245 is 542131134002.

It is a happy number.

200431131245 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 4 ways, for example, as 70417521769 + 130013609476 = 265363^2 + 360574^2 .

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

It is not a de Polignac number, because 200431131245 - 28 = 200431130989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200431131247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83165240 + ... + 83167649.

It is an arithmetic number, because the mean of its divisors is an integer number (30189419535).

Almost surely, 2200431131245 is an apocalyptic number.

It is an amenable number.

200431131245 is a deficient number, since it is larger than the sum of its proper divisors (41084225035).

200431131245 is a wasteful number, since it uses less digits than its factorization.

200431131245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166333135.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 200431131245 its reverse (542131134002), we get a palindrome (742562265247).

The spelling of 200431131245 in words is "two hundred billion, four hundred thirty-one million, one hundred thirty-one thousand, two hundred forty-five".

Divisors: 1 5 241 1205 166332889 831664445 40086226249 200431131245