11312421 has 4 divisors (see below), whose sum is σ = 15083232. Its totient is φ = 7541612.

The previous prime is 11312393. The next prime is 11312443. The reversal of 11312421 is 12421311.

11312421 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 11312421 - 2¹⁰ = 11311397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11312421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312471) 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, 1885401 + ... + 1885406.

It is an arithmetic number, because the mean of its divisors is an integer number (3770808).

Almost surely, 2^11312421 is an apocalyptic number.

It is an amenable number.

11312421 is a deficient number, since it is larger than the sum of its proper divisors (3770811).

11312421 is an equidigital number, since it uses as much as digits as its factorization.

11312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770810.

The product of its digits is 48, while the sum is 15.

The square root of 11312421 is about 3363.3942677004. The cubic root of 11312421 is about 224.4838936003.

Adding to 11312421 its reverse (12421311), we get a palindrome (23733732).

The spelling of 11312421 in words is "eleven million, three hundred twelve thousand, four hundred twenty-one".