11271013 has 4 divisors (see below), whose sum is σ = 12138028. Its totient is φ = 10404000.

The previous prime is 11270999. The next prime is 11271019. The reversal of 11271013 is 31017211.

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 6461764 + 4809249 = 2542^2 + 2193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11271013 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 (11271019) 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, 433488 + ... + 433513.

It is an arithmetic number, because the mean of its divisors is an integer number (3034507).

Almost surely, 2^11271013 is an apocalyptic number.

11271013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11271013 is a deficient number, since it is larger than the sum of its proper divisors (867015).

11271013 is an equidigital number, since it uses as much as digits as its factorization.

11271013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867014.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 11271013 is about 3357.2329380012. The cubic root of 11271013 is about 224.2096583488.

Adding to 11271013 its reverse (31017211), we get a palindrome (42288224).

The spelling of 11271013 in words is "eleven million, two hundred seventy-one thousand, thirteen".