Search a number
-
+
11231020241 = 71604431463
BaseRepresentation
bin10100111010110101…
…11100010011010001
31001222201010221102122
422131122330103101
5141000120121431
65054235424025
7545213045150
oct123532742321
931881127378
1011231020241
114843688811
1222152b5015
13109ca5310c
14787849597
1545aec4a7b
hex29d6bc4d1

11231020241 has 4 divisors (see below), whose sum is σ = 12835451712. Its totient is φ = 9626588772.

The previous prime is 11231020181. The next prime is 11231020259. The reversal of 11231020241 is 14202013211.

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: 14202013211 = 43330279377.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-11231020241 is a prime.

It is a super-2 number, since 2×112310202412 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231020291) 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, 802215725 + ... + 802215738.

It is an arithmetic number, because the mean of its divisors is an integer number (3208862928).

Almost surely, 211231020241 is an apocalyptic number.

It is an amenable number.

11231020241 is a deficient number, since it is larger than the sum of its proper divisors (1604431471).

11231020241 is an equidigital number, since it uses as much as digits as its factorization.

11231020241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604431470.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11231020241 its reverse (14202013211), we get a palindrome (25433033452).

The spelling of 11231020241 in words is "eleven billion, two hundred thirty-one million, twenty thousand, two hundred forty-one".

Divisors: 1 7 1604431463 11231020241