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31503043241 is a prime number
BaseRepresentation
bin11101010101101110…
…100100101010101001
310000022111112102002022
4131111232210222221
51004004234340431
622250003314225
72163450310055
oct352556445251
9100274472068
1031503043241
11123a671272a
12613237b975
132c808b15b7
14174bd00c65
15c45a7507b
hex755ba4aa9

31503043241 has 2 divisors, whose sum is σ = 31503043242. Its totient is φ = 31503043240.

The previous prime is 31503043207. The next prime is 31503043283. The reversal of 31503043241 is 14234030513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19354374400 + 12148668841 = 139120^2 + 110221^2 .

It is a cyclic number.

It is not a de Polignac number, because 31503043241 - 218 = 31502781097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31503043241.

It is not a weakly prime, because it can be changed into another prime (31503040241) 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 as a sum of consecutive naturals, namely, 15751521620 + 15751521621.

It is an arithmetic number, because the mean of its divisors is an integer number (15751521621).

Almost surely, 231503043241 is an apocalyptic number.

It is an amenable number.

31503043241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31503043241 is an equidigital number, since it uses as much as digits as its factorization.

31503043241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 31503043241 its reverse (14234030513), we get a palindrome (45737073754).

The spelling of 31503043241 in words is "thirty-one billion, five hundred three million, forty-three thousand, two hundred forty-one".