Search a number
-
+
13001031001 = 71857290143
BaseRepresentation
bin11000001101110101…
…11111110101011001
31020120001201210201201
430012322333311121
5203111230443001
65550025114201
7640114640320
oct140672776531
936501653651
1013001031001
11557181a022
12262a028961
1312c267306a
148b49570b7
155115a7501
hex306ebfd59

13001031001 has 4 divisors (see below), whose sum is σ = 14858321152. Its totient is φ = 11143740852.

The previous prime is 13001030947. The next prime is 13001031049. The reversal of 13001031001 is 10013010031.

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: 10013010031 = 10793579533.

It is a cyclic number.

It is not a de Polignac number, because 13001031001 - 27 = 13001030873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13001035001) 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, 928645065 + ... + 928645078.

It is an arithmetic number, because the mean of its divisors is an integer number (3714580288).

Almost surely, 213001031001 is an apocalyptic number.

It is an amenable number.

13001031001 is a deficient number, since it is larger than the sum of its proper divisors (1857290151).

13001031001 is an equidigital number, since it uses as much as digits as its factorization.

13001031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857290150.

The product of its (nonzero) digits is 9, while the sum is 10.

Adding to 13001031001 its reverse (10013010031), we get a palindrome (23014041032).

It can be divided in two parts, 1300 and 1031001, that added together give a palindrome (1032301).

The spelling of 13001031001 in words is "thirteen billion, one million, thirty-one thousand, one".

Divisors: 1 7 1857290143 13001031001