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102203233231 = 119291203021
BaseRepresentation
bin101111100101111001…
…0011001001111001111
3100202210201102012001111
41133023302121033033
53133303011430411
6114541305552451
710245456102001
oct1371362311717
9322721365044
10102203233231
113a387073910
12179837a5727
13983a103948
144d37900371
1529d2894721
hex17cbc993cf

102203233231 has 4 divisors (see below), whose sum is σ = 111494436264. Its totient is φ = 92912030200.

The previous prime is 102203233229. The next prime is 102203233247. The reversal of 102203233231 is 132332302201.

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

It is not a de Polignac number, because 102203233231 - 21 = 102203233229 is a prime.

It is a super-2 number, since 2×1022032332312 (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 (102203243231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4645601500 + ... + 4645601521.

It is an arithmetic number, because the mean of its divisors is an integer number (27873609066).

Almost surely, 2102203233231 is an apocalyptic number.

102203233231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102203233231 is a deficient number, since it is larger than the sum of its proper divisors (9291203033).

102203233231 is an equidigital number, since it uses as much as digits as its factorization.

102203233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9291203032.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 102203233231 its reverse (132332302201), we get a palindrome (234535535432).

The spelling of 102203233231 in words is "one hundred two billion, two hundred three million, two hundred thirty-three thousand, two hundred thirty-one".

Divisors: 1 11 9291203021 102203233231