Base | Representation |
---|---|
bin | 11000011110101100… |
… | …10110111011101111 |
3 | 1020220220210011122220 |
4 | 30033112112323233 |
5 | 203403424434411 |
6 | 10012035410423 |
7 | 643452510612 |
oct | 141726267357 |
9 | 36826704586 |
10 | 13142421231 |
11 | 5634610655 |
12 | 2669453a13 |
13 | 1315a49114 |
14 | 8c9640179 |
15 | 51dbd5b06 |
hex | 30f596eef |
13142421231 has 8 divisors (see below), whose sum is σ = 18127477680. Its totient is φ = 8459489472.
The previous prime is 13142421209. The next prime is 13142421241. The reversal of 13142421231 is 13212424131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13142421231 - 25 = 13142421199 is a prime.
It is a super-2 number, since 2×131424212312 (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 (13142421241) 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, 75531070 + ... + 75531243.
It is an arithmetic number, because the mean of its divisors is an integer number (2265934710).
Almost surely, 213142421231 is an apocalyptic number.
13142421231 is a deficient number, since it is larger than the sum of its proper divisors (4985056449).
13142421231 is a wasteful number, since it uses less digits than its factorization.
13142421231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 151062345.
The product of its digits is 1152, while the sum is 24.
Adding to 13142421231 its reverse (13212424131), we get a palindrome (26354845362).
The spelling of 13142421231 in words is "thirteen billion, one hundred forty-two million, four hundred twenty-one thousand, two hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •