Search a number
-
+
12311142013 = 7310913911131
BaseRepresentation
bin10110111011100110…
…10001111001111101
31011202222120210221201
423131303101321331
5200203123021023
65353342255501
7614036660212
oct133563217175
934688523851
1012311142013
115248356235
122476b87591
131212763c21
1484b091b09
154c0c30bad
hex2ddcd1e7d

12311142013 has 16 divisors (see below), whose sum is σ = 12686027200. Its totient is φ = 11943469440.

The previous prime is 12311141993. The next prime is 12311142043. The reversal of 12311142013 is 31024111321.

It is a cyclic number.

It is not a de Polignac number, because 12311142013 - 25 = 12311141981 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 (12311142043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100458 + ... + 1111588.

It is an arithmetic number, because the mean of its divisors is an integer number (792876700).

Almost surely, 212311142013 is an apocalyptic number.

It is an amenable number.

12311142013 is a deficient number, since it is larger than the sum of its proper divisors (374885187).

12311142013 is a wasteful number, since it uses less digits than its factorization.

12311142013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11452.

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

Adding to 12311142013 its reverse (31024111321), we get a palindrome (43335253334).

The spelling of 12311142013 in words is "twelve billion, three hundred eleven million, one hundred forty-two thousand, thirteen".

Divisors: 1 73 109 139 7957 10147 11131 15151 812563 1106023 1213279 1547209 88569367 112946257 168645781 12311142013