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20123131030333 = 31662719795133
BaseRepresentation
bin1001001001101010010000…
…00100111010101100111101
32122020202022121012221022121
410210311020010322230331
510114144133020432313
6110444234435242541
74144563642351412
oct444651004725475
978222277187277
1020123131030333
116459198948631
12230bbb7a49451
13b2c7ac06c076
144d7d71358109
1524d6aeb6428d
hex124d4813ab3d

20123131030333 has 8 divisors (see below), whose sum is σ = 20772579854336. Its totient is φ = 19473701929200.

The previous prime is 20123131030241. The next prime is 20123131030361. The reversal of 20123131030333 is 33303013132102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-20123131030333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123131030298 and 20123131030307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123131034333) 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, 2843166 + ... + 6951967.

It is an arithmetic number, because the mean of its divisors is an integer number (2596572481792).

Almost surely, 220123131030333 is an apocalyptic number.

It is an amenable number.

20123131030333 is a deficient number, since it is larger than the sum of its proper divisors (649448824003).

20123131030333 is an equidigital number, since it uses as much as digits as its factorization.

20123131030333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9861435.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 20123131030333 its reverse (33303013132102), we get a palindrome (53426144162435).

The spelling of 20123131030333 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-one million, thirty thousand, three hundred thirty-three".

Divisors: 1 31 66271 2054401 9795133 303649123 649133259043 20123131030333