Search a number
-
+
131002010111 = 718714572873
BaseRepresentation
bin111101000000001010…
…1000000100111111111
3110112010202101122002102
41322000111000213333
54121243003310421
6140103111415315
712315231466430
oct1720025004777
9415122348072
10131002010111
1150615246165
122148038453b
13c47966691b
1464aa5bb487
15361ace060b
hex1e805409ff

131002010111 has 4 divisors (see below), whose sum is σ = 149716582992. Its totient is φ = 112287437232.

The previous prime is 131002010107. The next prime is 131002010119. The reversal of 131002010111 is 111010200131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111010200131 = 333293330739.

It is a cyclic number.

It is not a de Polignac number, because 131002010111 - 22 = 131002010107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131002010092 and 131002010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131002010119) 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, 9357286430 + ... + 9357286443.

It is an arithmetic number, because the mean of its divisors is an integer number (37429145748).

Almost surely, 2131002010111 is an apocalyptic number.

131002010111 is a deficient number, since it is larger than the sum of its proper divisors (18714572881).

131002010111 is an equidigital number, since it uses as much as digits as its factorization.

131002010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18714572880.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 131002010111 its reverse (111010200131), we get a palindrome (242012210242).

The spelling of 131002010111 in words is "one hundred thirty-one billion, two million, ten thousand, one hundred eleven".

Divisors: 1 7 18714572873 131002010111