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13230021011 = 20876339253
BaseRepresentation
bin11000101001001001…
…00001100110010011
31021011000121200222012
430110210201212103
5204043341133021
610024445133135
7645565215554
oct142444414623
937130550865
1013230021011
11567a002669
12269285a1ab
13132ac3a6cc
148d712432b
1552673b35b
hex314921993

13230021011 has 4 divisors (see below), whose sum is σ = 13236362352. Its totient is φ = 13223679672.

The previous prime is 13230020927. The next prime is 13230021019. The reversal of 13230021011 is 11012003231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11012003231 = 18433597407.

It is a cyclic number.

It is not a de Polignac number, because 13230021011 - 210 = 13230019987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13230021019) 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, 3167540 + ... + 3171713.

It is an arithmetic number, because the mean of its divisors is an integer number (3309090588).

Almost surely, 213230021011 is an apocalyptic number.

13230021011 is a deficient number, since it is larger than the sum of its proper divisors (6341341).

13230021011 is an equidigital number, since it uses as much as digits as its factorization.

13230021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341340.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13230021011 its reverse (11012003231), we get a palindrome (24242024242).

The spelling of 13230021011 in words is "thirteen billion, two hundred thirty million, twenty-one thousand, eleven".

Divisors: 1 2087 6339253 13230021011