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1031103210311 = 3133261393881
BaseRepresentation
bin11110000000100101000…
…10100110001101000111
310122120110100121012220022
433000102202212031013
5113343144410212221
62105403212125355
7134331461451326
oct17002242461507
93576410535808
101031103210311
11368319977189
12147a0246685b
13763040968b5
1437c971c80bd
151bc4c15c4ab
hexf0128a6347

1031103210311 has 4 divisors (see below), whose sum is σ = 1064364604224. Its totient is φ = 997841816400.

The previous prime is 1031103210283. The next prime is 1031103210329. The reversal of 1031103210311 is 1130123011301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1031103210311 - 238 = 756225303367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031103210311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031103210911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16630696910 + ... + 16630696971.

It is an arithmetic number, because the mean of its divisors is an integer number (266091151056).

Almost surely, 21031103210311 is an apocalyptic number.

1031103210311 is a deficient number, since it is larger than the sum of its proper divisors (33261393913).

1031103210311 is an equidigital number, since it uses as much as digits as its factorization.

1031103210311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33261393912.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1031103210311 its reverse (1130123011301), we get a palindrome (2161226221612).

The spelling of 1031103210311 in words is "one trillion, thirty-one billion, one hundred three million, two hundred ten thousand, three hundred eleven".

Divisors: 1 31 33261393881 1031103210311