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331312131023 = 1513496286877
BaseRepresentation
bin1001101001000111011…
…11011110101111001111
31011200011201020002111112
410310203233132233033
520412011401143043
6412111440442235
732636136435146
oct4644357365717
91150151202445
10331312131023
11118566073835
125426391937b
132531ccb84a3
141206d94875d
1589415c2518
hex4d23bdebcf

331312131023 has 8 divisors (see below), whose sum is σ = 334461909600. Its totient is φ = 328174927200.

The previous prime is 331312130971. The next prime is 331312131097. The reversal of 331312131023 is 320131213133.

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 331312131023 - 218 = 331311868879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331312131023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331315131023) 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, 3090740 + ... + 3196137.

It is an arithmetic number, because the mean of its divisors is an integer number (41807738700).

Almost surely, 2331312131023 is an apocalyptic number.

331312131023 is a deficient number, since it is larger than the sum of its proper divisors (3149778577).

331312131023 is a wasteful number, since it uses less digits than its factorization.

331312131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287377.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 331312131023 its reverse (320131213133), we get a palindrome (651443344156).

The spelling of 331312131023 in words is "three hundred thirty-one billion, three hundred twelve million, one hundred thirty-one thousand, twenty-three".

Divisors: 1 151 349 52699 6286877 949318427 2194120073 331312131023