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13230122131 = 30894282979
BaseRepresentation
bin11000101001001001…
…11010010010010011
31021011000210211200101
430110210322102103
5204043402402011
610024451233231
7645566116432
oct142444722223
937130724611
1013230122131
11567a071636
1226928a8817
13132ac74745
148d714d119
1552675b2c1
hex31493a493

13230122131 has 4 divisors (see below), whose sum is σ = 13234408200. Its totient is φ = 13225836064.

The previous prime is 13230122099. The next prime is 13230122149. The reversal of 13230122131 is 13122103231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13122103231 = 118631106137.

It is a cyclic number.

It is not a de Polignac number, because 13230122131 - 25 = 13230122099 is a prime.

It is a super-2 number, since 2×132301221312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13230122099 and 13230122108.

It is not an unprimeable number, because it can be changed into a prime (13230126131) 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, 2138401 + ... + 2144578.

It is an arithmetic number, because the mean of its divisors is an integer number (3308602050).

Almost surely, 213230122131 is an apocalyptic number.

13230122131 is a deficient number, since it is larger than the sum of its proper divisors (4286069).

13230122131 is an equidigital number, since it uses as much as digits as its factorization.

13230122131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286068.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13230122131 its reverse (13122103231), we get a palindrome (26352225362).

The spelling of 13230122131 in words is "thirteen billion, two hundred thirty million, one hundred twenty-two thousand, one hundred thirty-one".

Divisors: 1 3089 4282979 13230122131