Base | Representation |
---|---|
bin | 11000110101001101… |
… | …00010100010001111 |
3 | 1021102002000202111120 |
4 | 30122212202202033 |
5 | 204300242244211 |
6 | 10042502052023 |
7 | 651234302355 |
oct | 143246424217 |
9 | 37362022446 |
10 | 13331212431 |
11 | 5721138239 |
12 | 270071a013 |
13 | 1345baa5a4 |
14 | 9067457d5 |
15 | 530578d06 |
hex | 31a9a288f |
13331212431 has 8 divisors (see below), whose sum is σ = 17789929344. Its totient is φ = 8879985240.
The previous prime is 13331212393. The next prime is 13331212457. The reversal of 13331212431 is 13421213331.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13331212431 - 29 = 13331211919 is a prime.
It is a super-2 number, since 2×133312124312 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13331211431) 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, 1868275 + ... + 1875396.
It is an arithmetic number, because the mean of its divisors is an integer number (2223741168).
Almost surely, 213331212431 is an apocalyptic number.
13331212431 is a deficient number, since it is larger than the sum of its proper divisors (4458716913).
13331212431 is a wasteful number, since it uses less digits than its factorization.
13331212431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3744861.
The product of its digits is 1296, while the sum is 24.
Adding to 13331212431 its reverse (13421213331), we get a palindrome (26752425762).
The spelling of 13331212431 in words is "thirteen billion, three hundred thirty-one million, two hundred twelve thousand, four hundred thirty-one".
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