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10302211231 = 13792477787
BaseRepresentation
bin10011001100000111…
…10100010010011111
3222120222102112222221
421212003310102133
5132044331224411
64422140050211
7513204231154
oct114603642237
928528375887
1010302211231
114407369864
121bb6233967
13c824b08a0
146da35022b
154046a7071
hex2660f449f

10302211231 has 4 divisors (see below), whose sum is σ = 11094689032. Its totient is φ = 9509733432.

The previous prime is 10302211207. The next prime is 10302211237. The reversal of 10302211231 is 13211220301.

10302211231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10302211231 - 213 = 10302203039 is a prime.

It is a super-2 number, since 2×103022112312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10302211237) 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, 396238881 + ... + 396238906.

It is an arithmetic number, because the mean of its divisors is an integer number (2773672258).

Almost surely, 210302211231 is an apocalyptic number.

10302211231 is a deficient number, since it is larger than the sum of its proper divisors (792477801).

10302211231 is an equidigital number, since it uses as much as digits as its factorization.

10302211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792477800.

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

Adding to 10302211231 its reverse (13211220301), we get a palindrome (23513431532).

The spelling of 10302211231 in words is "ten billion, three hundred two million, two hundred eleven thousand, two hundred thirty-one".

Divisors: 1 13 792477787 10302211231