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13001103131 = 13794898563
BaseRepresentation
bin11000001101110110…
…10001011100011011
31020120001212110200012
430012323101130123
5203111240300011
65550030432135
7640115360522
oct140673213433
936501773605
1013001103131
115571869235
12262a06264b
1312c2699b43
148b49754b9
155115bda8b
hex306ed171b

13001103131 has 4 divisors (see below), whose sum is σ = 13096001832. Its totient is φ = 12906204432.

The previous prime is 13001103097. The next prime is 13001103221. The reversal of 13001103131 is 13130110031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13130110031 = 64120483791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13001103131 is a prime.

It is a super-2 number, since 2×130011031312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13001103331) 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, 47449145 + ... + 47449418.

It is an arithmetic number, because the mean of its divisors is an integer number (3274000458).

Almost surely, 213001103131 is an apocalyptic number.

13001103131 is a deficient number, since it is larger than the sum of its proper divisors (94898701).

13001103131 is an equidigital number, since it uses as much as digits as its factorization.

13001103131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94898700.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 13001103131 its reverse (13130110031), we get a palindrome (26131213162).

The spelling of 13001103131 in words is "thirteen billion, one million, one hundred three thousand, one hundred thirty-one".

Divisors: 1 137 94898563 13001103131