Search a number
-
+
1310005331891 is a prime number
BaseRepresentation
bin10011000100000010011…
…001110000011110110011
311122020100112010222022222
4103010002121300132303
5132430342331110031
62441450320351255
7163434103411244
oct23040231603663
94566315128288
101310005331891
1146562a949123
12191a7a17552b
13966c0c30779
14475942d8ccb
15241224d7e7b
hex131026707b3

1310005331891 has 2 divisors, whose sum is σ = 1310005331892. Its totient is φ = 1310005331890.

The previous prime is 1310005331807. The next prime is 1310005331897. The reversal of 1310005331891 is 1981335000131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310005331891 - 230 = 1308931590067 is a prime.

It is a super-2 number, since 2×13100053318912 (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310005331897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655002665945 + 655002665946.

It is an arithmetic number, because the mean of its divisors is an integer number (655002665946).

Almost surely, 21310005331891 is an apocalyptic number.

1310005331891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310005331891 is an equidigital number, since it uses as much as digits as its factorization.

1310005331891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 1310005331891 in words is "one trillion, three hundred ten billion, five million, three hundred thirty-one thousand, eight hundred ninety-one".