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2002312311031 = 99717831126381
BaseRepresentation
bin11101001000110011000…
…111010011000011110111
321002102022120212102101101
4131020303013103003313
5230301213422423111
64131503301510531
7264443110552444
oct35106307230367
97072276772341
102002312311031
117021a311033a
1228408a412447
13116a81629c56
146ccaba049cb
1537140ed1bc1
hex1d2331d30f7

2002312311031 has 8 divisors (see below), whose sum is σ = 2005446557024. Its totient is φ = 1999180323360.

The previous prime is 2002312311017. The next prime is 2002312311047. The reversal of 2002312311031 is 1301132132002.

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 2002312311031 - 213 = 2002312302839 is a prime.

It is a super-3 number, since 3×20023123110313 (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002312311001) 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, 1214461 + ... + 2340841.

It is an arithmetic number, because the mean of its divisors is an integer number (250680819628).

Almost surely, 22002312311031 is an apocalyptic number.

2002312311031 is a deficient number, since it is larger than the sum of its proper divisors (3134245993).

2002312311031 is a wasteful number, since it uses less digits than its factorization.

2002312311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129161.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2002312311031 its reverse (1301132132002), we get a palindrome (3303444443033).

The spelling of 2002312311031 in words is "two trillion, two billion, three hundred twelve million, three hundred eleven thousand, thirty-one".

Divisors: 1 997 1783 1126381 1777651 1123001857 2008337323 2002312311031