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102403310213 = 973697285557
BaseRepresentation
bin101111101011110110…
…1101000001010000101
3100210022122220011002002
41133113231220022011
53134210221411323
6115013214155045
710253435526551
oct1372755501205
9323278804062
10102403310213
113a479aa9696
1217a1a7b2a85
13986c6b6ca9
144d56302861
1529e5216828
hex17d7b68285

102403310213 has 8 divisors (see below), whose sum is σ = 103487361432. Its totient is φ = 101319837696.

The previous prime is 102403310203. The next prime is 102403310231. The reversal of 102403310213 is 312013304201.

It can be written as a sum of positive squares in 4 ways, for example, as 4998772804 + 97404537409 = 70702^2 + 312097^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 102403310213 - 222 = 102399115909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102403310203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215831 + ... + 501387.

It is an arithmetic number, because the mean of its divisors is an integer number (12935920179).

Almost surely, 2102403310213 is an apocalyptic number.

It is an amenable number.

102403310213 is a deficient number, since it is larger than the sum of its proper divisors (1084051219).

102403310213 is an equidigital number, since it uses as much as digits as its factorization.

102403310213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289351.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 102403310213 its reverse (312013304201), we get a palindrome (414416614414).

The spelling of 102403310213 in words is "one hundred two billion, four hundred three million, three hundred ten thousand, two hundred thirteen".

Divisors: 1 97 3697 285557 358609 27699029 1055704229 102403310213