11240331421 has 6 divisors (see below), whose sum is σ = 12355075166. Its totient is φ = 10218483000.

The previous prime is 11240331413. The next prime is 11240331437. The reversal of 11240331421 is 12413304211.

It can be written as a sum of positive squares in only one way, i.e., 10243666521 + 996664900 = 101211^2 + 31570^2 .

It is not a de Polignac number, because 11240331421 - 2³ = 11240331413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11240331392 and 11240331401.

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 5 ways as a sum of consecutive naturals, for example, 46447530 + ... + 46447771.

Almost surely, 2^11240331421 is an apocalyptic number.

11240331421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11240331421 is a deficient number, since it is larger than the sum of its proper divisors (1114743745).

11240331421 is an equidigital number, since it uses as much as digits as its factorization.

11240331421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92895323 (or 92895312 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 11240331421 its reverse (12413304211), we get a palindrome (23653635632).

The spelling of 11240331421 in words is "eleven billion, two hundred forty million, three hundred thirty-one thousand, four hundred twenty-one".