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40312010220 = 22351036522979
BaseRepresentation
bin100101100010110010…
…000111010111101100
310212001102011022001120
4211202302013113230
51130024333311340
630304042140540
72624653301406
oct454262072754
9125042138046
1040312010220
1116107095a29
1279904b1750
133a558c6bb1
141d45bc9b76
1510ae0b94d0
hex962c875ec

40312010220 has 48 divisors (see below), whose sum is σ = 113969506560. Its totient is φ = 10645500096.

The previous prime is 40312010203. The next prime is 40312010227. The reversal of 40312010220 is 2201021304.

40312010220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40312010220.

It is not an unprimeable number, because it can be changed into a prime (40312010227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3255310 + ... + 3267669.

It is an arithmetic number, because the mean of its divisors is an integer number (2374364720).

Almost surely, 240312010220 is an apocalyptic number.

It is an amenable number.

40312010220 is an abundant number, since it is smaller than the sum of its proper divisors (73657496340).

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

40312010220 is a wasteful number, since it uses less digits than its factorization.

40312010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523094 (or 6523092 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 40312010220 its reverse (2201021304), we get a palindrome (42513031524).

The spelling of 40312010220 in words is "forty billion, three hundred twelve million, ten thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 103 206 309 412 515 618 1030 1236 1545 2060 3090 6180 6522979 13045958 19568937 26091916 32614895 39137874 65229790 78275748 97844685 130459580 195689370 391378740 671866837 1343733674 2015600511 2687467348 3359334185 4031201022 6718668370 8062402044 10078002555 13437336740 20156005110 40312010220