Base | Representation |
---|---|
bin | 11000101001010010… |
… | …00100111101010100 |
3 | 1021011002212100000112 |
4 | 30110221010331110 |
5 | 204044142330140 |
6 | 10024530502152 |
7 | 645611316104 |
oct | 142451047524 |
9 | 37132770015 |
10 | 13231214420 |
11 | 567a748256 |
12 | 2693134958 |
13 | 132b267978 |
14 | 8d7355204 |
15 | 5268c4c65 |
hex | 314a44f54 |
13231214420 has 24 divisors (see below), whose sum is σ = 27798876000. Its totient is φ = 5289947552.
The previous prime is 13231214411. The next prime is 13231214429. The reversal of 13231214420 is 2441213231.
It is an interprime number because it is at equal distance from previous prime (13231214411) and next prime (13231214429).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13231214429) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115610 + ... + 199569.
It is an arithmetic number, because the mean of its divisors is an integer number (1158286500).
Almost surely, 213231214420 is an apocalyptic number.
13231214420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
13231214420 is an abundant number, since it is smaller than the sum of its proper divisors (14567661580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13231214420 is a wasteful number, since it uses less digits than its factorization.
13231214420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 317287 (or 317285 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 23.
Adding to 13231214420 its reverse (2441213231), we get a palindrome (15672427651).
The spelling of 13231214420 in words is "thirteen billion, two hundred thirty-one million, two hundred fourteen thousand, four hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.091 sec. • engine limits •