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31032300103 = 724783132409
BaseRepresentation
bin11100111001101010…
…110101001001000111
32222002200202011220021
4130321222311021013
51002023232100403
622131145520011
72146003125100
oct347152651107
988080664807
1031032300103
1112184a19412
1260207a3007
132c0720116c
1417055a33a7
15c1958a8bd
hex739ab5247

31032300103 has 12 divisors (see below), whose sum is σ = 36106618080. Its totient is φ = 26593352352.

The previous prime is 31032300049. The next prime is 31032300113. The reversal of 31032300103 is 30100323013.

It is a de Polignac number, because none of the positive numbers 2k-31032300103 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 (31032300113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168163 + ... + 300571.

It is an arithmetic number, because the mean of its divisors is an integer number (3008884840).

Almost surely, 231032300103 is an apocalyptic number.

31032300103 is a deficient number, since it is larger than the sum of its proper divisors (5074317977).

31032300103 is a wasteful number, since it uses less digits than its factorization.

31032300103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137206 (or 137199 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31032300103 its reverse (30100323013), we get a palindrome (61132623116).

The spelling of 31032300103 in words is "thirty-one billion, thirty-two million, three hundred thousand, one hundred three".

Divisors: 1 7 49 4783 33481 132409 234367 926863 6488041 633312247 4433185729 31032300103