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102203141231 = 487209862713
BaseRepresentation
bin101111100101111001…
…0000010110001101111
3100202210201020111212002
41133023302002301233
53133303001004411
6114541304002515
710245455236532
oct1371362026157
9322721214762
10102203141231
113a387010784
121798376043b
13983a0a0ac9
144d378b8a19
1529d287733b
hex17cbc82c6f

102203141231 has 4 divisors (see below), whose sum is σ = 102413004432. Its totient is φ = 101993278032.

The previous prime is 102203141171. The next prime is 102203141267. The reversal of 102203141231 is 132141302201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-102203141231 is a prime.

It is a super-2 number, since 2×1022031412312 (a number of 23 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 (102203141531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104930870 + ... + 104931843.

It is an arithmetic number, because the mean of its divisors is an integer number (25603251108).

Almost surely, 2102203141231 is an apocalyptic number.

102203141231 is a deficient number, since it is larger than the sum of its proper divisors (209863201).

102203141231 is an equidigital number, since it uses as much as digits as its factorization.

102203141231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209863200.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 102203141231 its reverse (132141302201), we get a palindrome (234344443432).

The spelling of 102203141231 in words is "one hundred two billion, two hundred three million, one hundred forty-one thousand, two hundred thirty-one".

Divisors: 1 487 209862713 102203141231