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203230231013 = 2572552330983
BaseRepresentation
bin1011110101000101110…
…1110011100111100101
3201102120110112102102002
42331101131303213211
511312203414343023
6233210201055045
720453143314065
oct2752135634745
9642513472362
10203230231013
117920a192607
1233479487485
131621a613b84
149b9d0d93a5
155446d44b28
hex2f517739e5

203230231013 has 8 divisors (see below), whose sum is σ = 204035588928. Its totient is φ = 202424986624.

The previous prime is 203230231003. The next prime is 203230231021. The reversal of 203230231013 is 310132032302.

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 203230231013 - 234 = 186050361829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203230231003) 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 7 ways as a sum of consecutive naturals, for example, 6543920 + ... + 6574902.

It is an arithmetic number, because the mean of its divisors is an integer number (25504448616).

Almost surely, 2203230231013 is an apocalyptic number.

It is an amenable number.

203230231013 is a deficient number, since it is larger than the sum of its proper divisors (805357915).

203230231013 is a wasteful number, since it uses less digits than its factorization.

203230231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56763.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203230231013 its reverse (310132032302), we get a palindrome (513362263315).

The spelling of 203230231013 in words is "two hundred three billion, two hundred thirty million, two hundred thirty-one thousand, thirteen".

Divisors: 1 257 25523 30983 6559411 7962631 790779109 203230231013