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31210130300 = 2252714395793
BaseRepresentation
bin11101000100010001…
…001100101101111100
32222120002100220001212
4131010101030231330
51002404243132200
622200541223552
72153262505346
oct350421145574
988502326055
1031210130300
1112266339918
126070261bb8
132c34cc552b
141721054296
15c29eb6035
hex74444cb7c

31210130300 has 36 divisors (see below), whose sum is σ = 68679885456. Its totient is φ = 12308217600.

The previous prime is 31210130297. The next prime is 31210130377. The reversal of 31210130300 is 303101213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2190797 + ... + 2204996.

It is an arithmetic number, because the mean of its divisors is an integer number (1907774596).

Almost surely, 231210130300 is an apocalyptic number.

It is an amenable number.

31210130300 is an abundant number, since it is smaller than the sum of its proper divisors (37469755156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31210130300 is a wasteful number, since it uses less digits than its factorization.

31210130300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395878 (or 4395871 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31210130300 its reverse (303101213), we get a palindrome (31513231513).

The spelling of 31210130300 in words is "thirty-one billion, two hundred ten million, one hundred thirty thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 71 100 142 284 355 710 1420 1775 3550 7100 4395793 8791586 17583172 21978965 43957930 87915860 109894825 219789650 312101303 439579300 624202606 1248405212 1560506515 3121013030 6242026060 7802532575 15605065150 31210130300