Search a number
-
+
12812910241 = 22935587837
BaseRepresentation
bin10111110111011010…
…10111111010100001
31020001221202021120011
423323231113322201
5202220101111431
65515225044521
7632341640305
oct137355277241
936057667504
1012812910241
11548561011a
122597026741
1312926b7ac1
14897987d05
154eece7cb1
hex2fbb57ea1

12812910241 has 4 divisors (see below), whose sum is σ = 12818500372. Its totient is φ = 12807320112.

The previous prime is 12812910233. The next prime is 12812910247. The reversal of 12812910241 is 14201921821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1018950241 + 11793960000 = 31921^2 + 108600^2 .

It is a cyclic number.

It is not a de Polignac number, because 12812910241 - 23 = 12812910233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12812910247) 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, 2791626 + ... + 2796211.

It is an arithmetic number, because the mean of its divisors is an integer number (3204625093).

Almost surely, 212812910241 is an apocalyptic number.

It is an amenable number.

12812910241 is a deficient number, since it is larger than the sum of its proper divisors (5590131).

12812910241 is an equidigital number, since it uses as much as digits as its factorization.

12812910241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590130.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 12812910241 in words is "twelve billion, eight hundred twelve million, nine hundred ten thousand, two hundred forty-one".

Divisors: 1 2293 5587837 12812910241