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13020000023 = 118710968829
BaseRepresentation
bin11000010000000110…
…10110111100010111
31020121101102112100002
430020003112330113
5203131110000043
65551543441515
7640435113512
oct141003267427
936541375302
1013020000023
1155814a57a8
12263445629b
1312c6585134
148b7293d79
155130a2bb8
hex3080d6f17

13020000023 has 4 divisors (see below), whose sum is σ = 13030970040. Its totient is φ = 13009030008.

The previous prime is 13020000013. The next prime is 13020000043. The reversal of 13020000023 is 32000002031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32000002031 = 43373903007.

It is a cyclic number.

It is not a de Polignac number, because 13020000023 - 218 = 13019737879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13019999959 and 13020000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020000013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5483228 + ... + 5485601.

It is an arithmetic number, because the mean of its divisors is an integer number (3257742510).

Almost surely, 213020000023 is an apocalyptic number.

13020000023 is a deficient number, since it is larger than the sum of its proper divisors (10970017).

13020000023 is a wasteful number, since it uses less digits than its factorization.

13020000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10970016.

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 13020000023 its reverse (32000002031), we get a palindrome (45020002054).

The spelling of 13020000023 in words is "thirteen billion, twenty million, twenty-three", and thus it is an aban number and an uban number.

Divisors: 1 1187 10968829 13020000023