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1213023243013 = 18111131602083
BaseRepresentation
bin10001101001101101110…
…100011100101100000101
311021222000200020101212021
4101221231310130230011
5124333232422234023
62325131041523141
7153431563304401
oct21515564345405
94258020211767
101213023243013
11428492aa734a
121771130434b1
138a506736c6a
14429d3dc4101
15218481ce35d
hex11a6dd1cb05

1213023243013 has 8 divisors (see below), whose sum is σ = 1219836634016. Its totient is φ = 1206211078800.

The previous prime is 1213023242989. The next prime is 1213023243031. The reversal of 1213023243013 is 3103423203121.

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 1213023243013 - 237 = 1075584289541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213023243073) 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, 1713670 + ... + 2315752.

It is an arithmetic number, because the mean of its divisors is an integer number (152479579252).

Almost surely, 21213023243013 is an apocalyptic number.

It is an amenable number.

1213023243013 is a deficient number, since it is larger than the sum of its proper divisors (6813391003).

1213023243013 is a wasteful number, since it uses less digits than its factorization.

1213023243013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613395.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1213023243013 its reverse (3103423203121), we get a palindrome (4316446446134).

The spelling of 1213023243013 in words is "one trillion, two hundred thirteen billion, twenty-three million, two hundred forty-three thousand, thirteen".

Divisors: 1 181 11131 602083 2014711 108977023 6701785873 1213023243013