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102203031231313 = 178289573243617
BaseRepresentation
bin10111001111001111111111…
…010111110001101101010001
3111101212111212222020120101121
4113033033333113301231101
5101343443301443400223
61001211231355402241
730345632250504355
oct2717177727615521
9441774788216347
10102203031231313
112a624075780101
12b567770453381
1345049209c727c
141b34920199465
15bc3806dd415d
hex5cf3ff5f1b51

102203031231313 has 4 divisors (see below), whose sum is σ = 102203604653220. Its totient is φ = 102202457809408.

The previous prime is 102203031231239. The next prime is 102203031231331. The reversal of 102203031231313 is 313132130302201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1417735531969 + 100785295699344 = 1190687^2 + 10039188^2 .

It is a cyclic number.

It is not a de Polignac number, because 102203031231313 - 29 = 102203031230801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102203031231373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286443520 + ... + 286800097.

It is an arithmetic number, because the mean of its divisors is an integer number (25550901163305).

Almost surely, 2102203031231313 is an apocalyptic number.

It is an amenable number.

102203031231313 is a deficient number, since it is larger than the sum of its proper divisors (573421907).

102203031231313 is an equidigital number, since it uses as much as digits as its factorization.

102203031231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573421906.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 102203031231313 its reverse (313132130302201), we get a palindrome (415335161533514).

The spelling of 102203031231313 in words is "one hundred two trillion, two hundred three billion, thirty-one million, two hundred thirty-one thousand, three hundred thirteen".

Divisors: 1 178289 573243617 102203031231313