Search a number
-
+
13102431211 = 83157860617
BaseRepresentation
bin11000011001111011…
…10011101111101011
31020211010112110200001
430030331303233223
5203313210244321
610004050323431
7642455553622
oct141475635753
936733473601
1013102431211
115613a87551
122657b89577
13130a686c9c
148c41d06b9
1551a436c91
hex30cf73beb

13102431211 has 4 divisors (see below), whose sum is σ = 13260291912. Its totient is φ = 12944570512.

The previous prime is 13102431193. The next prime is 13102431227. The reversal of 13102431211 is 11213420131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13102431211 - 227 = 12968213483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13102431611) 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, 78930226 + ... + 78930391.

It is an arithmetic number, because the mean of its divisors is an integer number (3315072978).

Almost surely, 213102431211 is an apocalyptic number.

13102431211 is a deficient number, since it is larger than the sum of its proper divisors (157860701).

13102431211 is an equidigital number, since it uses as much as digits as its factorization.

13102431211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157860700.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 13102431211 its reverse (11213420131), we get a palindrome (24315851342).

The spelling of 13102431211 in words is "thirteen billion, one hundred two million, four hundred thirty-one thousand, two hundred eleven".

Divisors: 1 83 157860617 13102431211