Search a number
-
+
13102031302013 = 64720250434779
BaseRepresentation
bin1011111010101000110111…
…1010111110110101111101
31201101112122002101201001002
42332222031322332311331
53204130430003131023
643510553505300045
72521406356352243
oct276521572766575
951345562351032
1013102031302013
1141a15a4112095
121577317934625
137406932819c4
143341dab6c793
1517ac31db8b28
hexbea8debed7d

13102031302013 has 4 divisors (see below), whose sum is σ = 13122281737440. Its totient is φ = 13081780866588.

The previous prime is 13102031302001. The next prime is 13102031302057. The reversal of 13102031302013 is 31020313020131.

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.

It is a cyclic number.

It is not a de Polignac number, because 13102031302013 - 26 = 13102031301949 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 (13102031002013) 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, 10125216743 + ... + 10125218036.

It is an arithmetic number, because the mean of its divisors is an integer number (3280570434360).

Almost surely, 213102031302013 is an apocalyptic number.

It is an amenable number.

13102031302013 is a deficient number, since it is larger than the sum of its proper divisors (20250435427).

13102031302013 is an equidigital number, since it uses as much as digits as its factorization.

13102031302013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20250435426.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13102031302013 its reverse (31020313020131), we get a palindrome (44122344322144).

The spelling of 13102031302013 in words is "thirteen trillion, one hundred two billion, thirty-one million, three hundred two thousand, thirteen".

Divisors: 1 647 20250434779 13102031302013