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13020313023 = 321638875469
BaseRepresentation
bin11000010000001001…
…00011010110111111
31020121102000102200200
430020010203112333
5203131200004043
65551554254543
7640440556164
oct141004432677
936542012620
1013020313023
115581699983
122634587453
1312c6664743
148b733606b
155131157d3
hex3081235bf

13020313023 has 12 divisors (see below), whose sum is σ = 18922502040. Its totient is φ = 8626954896.

The previous prime is 13020313021. The next prime is 13020313037. The reversal of 13020313023 is 32031302031.

It is not a de Polignac number, because 13020313023 - 21 = 13020313021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13020312987 and 13020313005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020313021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4436268 + ... + 4439201.

It is an arithmetic number, because the mean of its divisors is an integer number (1576875170).

Almost surely, 213020313023 is an apocalyptic number.

13020313023 is a deficient number, since it is larger than the sum of its proper divisors (5902189017).

13020313023 is a wasteful number, since it uses less digits than its factorization.

13020313023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8875638 (or 8875635 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 13020313023 its reverse (32031302031), we get a palindrome (45051615054).

The spelling of 13020313023 in words is "thirteen billion, twenty million, three hundred thirteen thousand, twenty-three".

Divisors: 1 3 9 163 489 1467 8875469 26626407 79879221 1446701447 4340104341 13020313023