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31220102303 = 1319112573541
BaseRepresentation
bin11101000100110111…
…001111010010011111
32222120210010112002022
4131010313033102133
51002414321233203
622201535050355
72153443330265
oct350467172237
988523115068
1031220102303
1112270a2aa45
1260736709bb
132c370a7420
1417224cc435
15c2acd5a38
hex744dcf49f

31220102303 has 8 divisors (see below), whose sum is σ = 33797680896. Its totient is φ = 28667671200.

The previous prime is 31220102297. The next prime is 31220102311. The reversal of 31220102303 is 30320102213.

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 31220102303 - 218 = 31219840159 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 (31220102203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6284288 + ... + 6289253.

It is an arithmetic number, because the mean of its divisors is an integer number (4224710112).

Almost surely, 231220102303 is an apocalyptic number.

31220102303 is a deficient number, since it is larger than the sum of its proper divisors (2577578593).

31220102303 is a wasteful number, since it uses less digits than its factorization.

31220102303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12573745.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31220102303 its reverse (30320102213), we get a palindrome (61540204516).

The spelling of 31220102303 in words is "thirty-one billion, two hundred twenty million, one hundred two thousand, three hundred three".

Divisors: 1 13 191 2483 12573541 163456033 2401546331 31220102303