Search a number
-
+
13001021413 = 89527145219
BaseRepresentation
bin11000001101110101…
…11101011111100101
31020120001201022120121
430012322331133211
5203111230141123
65550025001541
7640114600342
oct140672753745
936501638517
1013001021413
1155718128a6
12262a0232b1
1312c266b8a3
148b49537c9
155115a475d
hex306ebd7e5

13001021413 has 4 divisors (see below), whose sum is σ = 13001256160. Its totient is φ = 13000786668.

The previous prime is 13001021399. The next prime is 13001021441. The reversal of 13001021413 is 31412010031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31412010031 = 136722978793.

It is a cyclic number.

It is not a de Polignac number, because 13001021413 - 233 = 4411086821 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 (13001021713) 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, 16918 + ... + 162136.

It is an arithmetic number, because the mean of its divisors is an integer number (3250314040).

Almost surely, 213001021413 is an apocalyptic number.

It is an amenable number.

13001021413 is a deficient number, since it is larger than the sum of its proper divisors (234747).

13001021413 is an equidigital number, since it uses as much as digits as its factorization.

13001021413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234746.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13001021413 its reverse (31412010031), we get a palindrome (44413031444).

The spelling of 13001021413 in words is "thirteen billion, one million, twenty-one thousand, four hundred thirteen".

Divisors: 1 89527 145219 13001021413