2311421 has 4 divisors (see below), whose sum is σ = 2641632. Its totient is φ = 1981212.

The previous prime is 2311417. The next prime is 2311451. The reversal of 2311421 is 1241132.

2311421 is digitally balanced in base 8, because in such base 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 2311421 - 2² = 2311417 is a prime.

2311421 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 2311396 and 2311405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311411) 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, 165095 + ... + 165108.

It is an arithmetic number, because the mean of its divisors is an integer number (660408).

2^2311421 is an apocalyptic number.

It is an amenable number.

2311421 is a deficient number, since it is larger than the sum of its proper divisors (330211).

2311421 is an equidigital number, since it uses as much as digits as its factorization.

2311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330210.

The product of its digits is 48, while the sum is 14.

The square root of 2311421 is about 1520.3358181665. The cubic root of 2311421 is about 132.2187412350.

Adding to 2311421 its reverse (1241132), we get a palindrome (3552553).

The spelling of 2311421 in words is "two million, three hundred eleven thousand, four hundred twenty-one".