11240331261 has 16 divisors (see below), whose sum is σ = 15847899648. Its totient is φ = 7074950400.

The previous prime is 11240331259. The next prime is 11240331287. The reversal of 11240331261 is 16213304211.

It is a happy number.

It is not a de Polignac number, because 11240331261 - 2¹ = 11240331259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11240331461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1470136 + ... + 1477761.

It is an arithmetic number, because the mean of its divisors is an integer number (990493728).

Almost surely, 2^11240331261 is an apocalyptic number.

It is an amenable number.

11240331261 is a deficient number, since it is larger than the sum of its proper divisors (4607568387).

11240331261 is a wasteful number, since it uses less digits than its factorization.

11240331261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947972.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 11240331261 its reverse (16213304211), we get a palindrome (27453635472).

The spelling of 11240331261 in words is "eleven billion, two hundred forty million, three hundred thirty-one thousand, two hundred sixty-one".