11331261 has 6 divisors (see below), whose sum is σ = 16367390. Its totient is φ = 7554168.

The previous prime is 11331251. The next prime is 11331263. The reversal of 11331261 is 16213311.

It can be written as a sum of positive squares in only one way, i.e., 9036036 + 2295225 = 3006^2 + 1515^2 .

It is not a de Polignac number, because 11331261 - 2⁹ = 11330749 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 (11331263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 629506 + ... + 629523.

Almost surely, 2^11331261 is an apocalyptic number.

It is an amenable number.

11331261 is a deficient number, since it is larger than the sum of its proper divisors (5036129).

11331261 is a wasteful number, since it uses less digits than its factorization.

11331261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259035 (or 1259032 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 11331261 is about 3366.1938446857. The cubic root of 11331261 is about 224.6084449195.

Adding to 11331261 its reverse (16213311), we get a palindrome (27544572).

The spelling of 11331261 in words is "eleven million, three hundred thirty-one thousand, two hundred sixty-one".